Buddha.dll Black Ops 2 Fix -

This guide was written by the maintenance team at TechReanimate, specializing in legacy PC game fixes, particularly for Call of Duty, Battlefield, and Halo modded clients. We have spent over 200 hours troubleshooting Plutonium errors.

Last updated: October 2025 – Verified working on Windows 11 24H2 and Plutonium version 1.3.2.

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Troubleshooting the "Buddha.dll" Error in Call of Duty: Black Ops 2

If you are seeing a "Buddha.dll is missing" or "Buddha.dll was not found" error when trying to launch Call of Duty: Black Ops 2, you are likely dealing with a file that has been quarantined by your antivirus or corrupted during installation. This specific DLL is often associated with the game's licensing or "crack" files in certain versions, which is why security software frequently flags it as a false positive.

Below is a comprehensive guide to fixing this error and getting your game back up and running. 1. Restore the File from Antivirus Quarantine

The most common reason for this error is that Windows Defender or a third-party antivirus has blocked the file.

Check Quarantine: Open your antivirus software (e.g., Windows Security) and look for "Protection History" or "Quarantined Threats".

Restore: If you find buddha.dll in the list, select it and choose Restore.

Add an Exclusion: To prevent it from being deleted again, add the entire Black Ops 2 game folder as an exclusion or exception in your antivirus settings. 2. Verify Game Integrity (Steam Users)

If you are playing the official Steam version, you can use the built-in repair tool to replace any missing files automatically. Open your Steam Library. Right-click on Call of Duty: Black Ops II. Select Properties > Installed Files (or Local Files).

Title: The Digital Apocrypha: Understanding the "Buddha.dll" Fix for Call of Duty: Black Ops 2

Introduction

In the realm of PC gaming, few things are as simultaneously frustrating and fascinating as software incompatibility. When a game is designed for a specific operating system environment, the march of technological progress—new hardware, updated operating systems, and patched APIs—can render beloved classics unplayable. Call of Duty: Black Ops II (BO2), released in 2012, stands as one of the most enduring entries in the franchise, celebrated for its multiplayer innovations and its ambitious, branching single-player campaign. However, with the release of Windows 10 and the eventual rollout of Windows 11, a significant portion of the player base found themselves unable to launch the game. This technical impasse gave rise to a specific, almost mythical solution within the community: the "Buddha.dll" fix. This essay explores the technical origins of the Black Ops II crashing issue, the functionality of the Buddha.dll fix, and the broader implications of community-driven software preservation.

The Technical Impasse

To understand the necessity of the Buddha.dll fix, one must first understand the nature of the crash that plagued Black Ops II on modern systems. Upon the widespread adoption of Windows 10, players reported a persistent crash at the startup of the game, often occurring right after the introductory cinematic or during the loading of the main menu. The error was cryptic, often citing memory access violations or providing no error message at all.

The root cause lay in the way the game’s engine interacted with the newer Windows kernel. Black Ops II relied on specific memory addressing and dependencies that were handled differently in Windows 7—the OS for which it was originally optimized—compared to the newer Windows 10/11 architecture. Specifically, the game struggled with memory allocation during the initialization phase. For years, the only reliable workaround was to run the game in "Windows 7 Compatibility Mode," a native Windows feature that attempts to emulate the older environment. However, this solution was inconsistent. It frequently resulted in performance stutters, an inability to use modern Discord overlays, and, for many, failed to prevent the crash entirely. The game was essentially stranded on a dying OS platform.

The Emergence of Buddha.dll

Enter the fix known colloquially as "Buddha.dll." In the modding and tech-support communities, particularly on platforms like Reddit and specialized gaming forums, a user or group of users identified a specific memory management issue within the game's executable. The solution involved creating a custom dynamic link library (DLL) file—named "Buddha.dll"—that acts as an intermediary between the game and the operating system.

The mechanism behind the fix is rooted in API hooking and memory management. The DLL is placed in the same directory as the game's executable (t6mp.exe for multiplayer or t6sp.exe for single-player). When the game is launched, the custom DLL is loaded, effectively "hooking" into the application's process. It redirects specific memory calls that would otherwise fail on Windows 10/11 to compatible memory blocks. Essentially, the Buddha.dll file forces the game to utilize memory addresses that the modern operating system can safely allocate, bypassing the access violations that caused the original crash.

This solution was revolutionary for the community because it required no complex installation, no permanent modification of system files, and no reliance on the often-flawed Windows Compatibility Mode. It was a surgical fix for a specific software wound.

Ethical and Security Considerations

While the Buddha.dll fix restored playability for thousands, its existence highlights a critical tension in PC gaming: the reliance on unofficial, third-party binaries. Downloading a random DLL file from the internet and placing it into a game folder carries inherent security risks. A DLL file executes code within the context of the application; if the source is malicious, it could theoretically act as a trojan for malware, keyloggers, or other unwanted software.

Consequently, the dissemination of the Buddha.dll fix required a high degree of community vetting. Trust was established through open-source releases or repeated verification by prominent community members and antivirus scans. This dynamic underscores a vulnerability in the modern digital ecosystem: when publishers do not update their legacy titles to function on current hardware, players are forced to entrust their system security to anonymous internet good Samaritans.

Furthermore, there is the question of competitive integrity. Black Ops II remains a popular title in the competitive scene. The use of third-party DLL files can sometimes trigger anti-cheat software like VAC (Valve Anti-Cheat) or Treyarch's internal systems. However, because the Buddha.dll fix does not alter gameplay mechanics, stats, or textures—merely fixing a memory allocation error—it is generally accepted by the community as a necessary evil rather than a cheat. Yet, it occupies a gray area where the line between "fix" and "hack" is blurred by technical necessity.

The Role of Publishers and Digital Preservation

The enduring reliance on the Buddha.dll fix serves as a case study in digital preservation. Call of Duty is one of the most profitable entertainment franchises in history. Yet, despite the resources available to Activision, the official support for Black Ops II on PC has been minimal regarding optimization for modern operating systems.

The community had to do the developer's job. The Buddha.dll fix represents a form of "guerrilla maintenance." It demonstrates that the gaming community is not just a consumer base but a collective of technical talent capable of sustaining the lifecycle of a product long after the vendor has moved on. While official patches are ideal, the rapid pace of OS evolution often leaves games behind faster than publishers can patch them. The Buddha.dll fix ensures that a cultural product—Black Ops II—remains accessible, preventing it from becoming "abandonware" purely due to technical obsolescence.

Conclusion

The "Buddha.dll" fix is more than just a file that stops a game from crashing; it is a symbol of the PC gaming ecosystem's resilience. It bridges the gap between the static code of 2012 and the dynamic environment of modern computing. While it highlights the risks associated with third-party software and the occasional negligence of triple-A publishers regarding legacy support, it ultimately stands as a testament to the ingenuity of the gaming community. Through the collaborative efforts of anonymous modders and tech enthusiasts, Call of Duty: Black Ops II was saved from digital extinction, allowing a new generation of players to experience the game on the hardware of today.

The "buddha.dll" error in Call of Duty: Black Ops 2 is often caused by antivirus software falsely flagging the file, which can be resolved by restoring it from quarantine or disabling real-time protection. Other solutions include verifying game files via Steam, updating Microsoft Visual C++ Redistributables, or running a System File Checker scan to repair corrupt components. For a more stable experience, users often switch to the Plutonium community launcher.

The buddha.dll error in Call of Duty: Black Ops 2 typically occurs because the file is missing, corrupted, or has been quarantined by your antivirus software. This file is primarily associated with modified or unofficial game versions. 1. Check Antivirus Quarantine

The most common cause for this error is a "false positive" where Windows Defender or other antivirus software flags and removes the file. Open Windows Security and go to Virus & threat protection.

Select Protection history and look for a recently quarantined buddha.dll. If found, select Actions and then Restore.

To prevent it from happening again, add the game folder to your antivirus Exclusions list. 2. Verify Game Files (Steam Users)

If you are playing on Steam, use the built-in repair tool to restore the missing file:

Open your Steam Library and right-click on Call of Duty: Black Ops 2. Select Properties > Installed Files.

Click Verify integrity of game files. Steam will scan for missing components like buddha.dll and redownload them. 3. Reinstall Essential Components

Sometimes the error is triggered by outdated drivers or missing system libraries:

DirectX & Visual C++: Download and install the latest DirectX and Visual C++ Redistributable files.

Graphics Drivers: Update your GPU drivers via the NVIDIA App or AMD Software. 4. Repair System Files

Corrupted Windows system files can sometimes interfere with how DLLs load. Open Command Prompt as an administrator. Type sfc /scannow and press Enter. Wait for the process to finish and then restart your PC. 5. Manual Placement (Advanced)

If you must replace the file manually, ensure you place it in the correct location: Buddha.dll Black Ops 2 Fix

The buddha.dll file should be placed in the game's root directory (where the t6sp.exe or t6mp.exe is located), not in Windows system folders.

Warning: Be extremely cautious when downloading DLL files from third-party sites, as they often contain malware or trojans. Summary Table of Fixes Fix Method Link to Resource Verify Files Steam users with missing files Steam Support Restoring DLL If antivirus deleted the file Windows Security Guide System Repair General system stability Microsoft SFC Tool

Are you using a Steam version or an unofficial launcher like Plutonium, as the fix process may differ slightly for custom clients? How Do I Fix Buddha.dll Is Missing Error? - Solvusoft

That is an interesting post title. While I can’t browse the specific post you’re referring to in real time, “Buddha.dll” is a known custom DLL file associated with Black Ops 2 modding, specifically for Plutonium (the popular third-party client for BO2 on PC).

Here’s what the “Buddha.dll Black Ops 2 Fix” likely refers to, and why it’s notable:

If you share a link or more context from the post (like the exact error it claims to fix), I can give you a more precise analysis of whether it’s legit or dangerous.

The buddha.dll file for Call of Duty: Black Ops II is a non-standard system file typically associated with unauthorized game cracks or bypasses (often linked to groups like Skidrow) rather than the official game installation. Errors such as "buddha.dll is missing" occur when antivirus software flags and removes the file as potentially malicious or when the file becomes corrupted during a third-party installation. Common Fixes for Buddha.dll Errors

If you are encountering this error, it is generally due to the file being quarantined or missing from the game directory.

Check Antivirus Quarantine: Most "missing" errors occur because Windows Defender or another antivirus has quarantined the file.

Open your antivirus Protection History or Quarantine section.

Locate buddha.dll. If it was flagged, you can choose to Restore it.

Add an Exclusion: To prevent it from being deleted again, add the entire game folder to your antivirus Exclusions list.

Run as Administrator: Right-click the game's launch shortcut, select Properties, and under the Compatibility tab, check Run this program as an administrator.

Verify Game Files (Official Versions): If you own the game on Steam, right-click the game in your library, go to Properties > Installed Files, and select Verify integrity of game files. This will restore any missing legitimate files, though it may not replace a third-party buddha.dll.

Compatibility Settings: Some users find success by setting the game to run in compatibility mode for Windows 8 and disabling fullscreen optimizations. Security Risks and Warnings

Origin: Legitimate copies of Black Ops II do not use buddha.dll; it is exclusively found in cracked versions or third-party repack installers.

Malware Potential: Security sites like DLL-files.com strongly advise against downloading this file from random internet sources, as it is often bundled with trojans or spyware.

Recommendation: The safest way to resolve the issue permanently and securely is to use a legitimate version of the game through Steam, which does not require this file to function.

buddha.dll error is a common issue encountered when launching Call of Duty: Black Ops 2

, particularly with certain game repacks. This file is typically a component of the game's crack that helps bypass Digital Rights Management (DRM). The most frequent cause of this error is Windows Defender

or other antivirus software flagging and removing the file as a "false positive". Quick Fix Guide for Buddha.dll

If you're seeing a "Buddha.dll is missing" or "Access Violation" error, follow these steps to restore the file and get the game running: Check Your Antivirus Quarantine Windows Security (Windows Defender). Navigate to Virus & threat protection Protection history Look for an entry related to buddha.dll . If it was quarantined, select it and choose Add a Folder Exclusion

To prevent the antivirus from deleting the file again, stay in Virus & threat protection Manage settings Exclusions Add or remove exclusions Add an exclusion and choose the Black Ops 2 is installed. Verify Game Files or Reinstall (If the file is gone)

If the file was permanently deleted and cannot be restored, you may need to reinstall the game or download just the missing DLL.

: Only download DLL files from trusted community sources or repacker sites mentioned in reputable forums like

First, let’s clear up a common misconception: Buddha.dll is not an official file from Treyarch or Activision. You will never find this file in a vanilla, legitimate Steam installation of Black Ops 2.

So, where does it come from?

Buddha.dll is a third-party plugin file associated with Plutonium, a popular, community-driven mod client that revived Black Ops 2 multiplayer after the official servers were overrun by security vulnerabilities (the infamous RCE exploits). Plutonium allows players to host dedicated servers, access custom僵尸 maps, and play without the risk of being hacked.

In the Plutonium ecosystem, Buddha.dll serves as a dependency hook for certain custom scripts, texture packs, or HUD modifications. Specifically, it is often tied to:

When Plutonium or a custom map tries to call upon this DLL and cannot find it, you get the error.

While the intent of the file may be to make the game playable, downloading it carries significant risks.

Black Ops 2 on PC runs on a heavily modified IW 5.0 engine. The engine was designed for Windows 7 and dual-core CPUs. On modern hardware with 16+ threads, the game’s internal thread scheduler goes haywire. A specific function—buried in the game’s CUIWidget_Scoreboard::Update routine—can write to freed memory when too many UI events happen at once.

The Buddha patch essentially NOPs out (no-operation) the dangerous memory writes and forces a safe fallback. It’s like putting a Band-Aid on an arterial wound, but strangely, it holds.

The most dangerous aspect of Buddha.dll is where you find it. It is rarely hosted on reputable sites. It is usually found on file-hosting services (like Mediafire, Mega, or Google Drive) linked in YouTube descriptions or Reddit threads.

Cybercriminals often take legitimate DLL files, bind malicious software (like keyloggers or Bitcoin miners) to them, and re-upload them. Because a .dll file is executable code, once you place it in your game folder and launch the game, you are unknowingly executing that code on your PC.

Before applying the fix, ensure you are actually experiencing this issue. Symptoms include:

The Buddha.dll error in Call of Duty: Black Ops 2 is a common issue typically caused by antivirus software incorrectly flagging the file as a threat, or the file missing entirely. This specific DLL file is widely associated with cracked versions of games or third-party wrappers, meaning it is often not part of the standard retail installation. Common Causes of the Error

Antivirus Quarantining: Most modern antivirus programs, including Windows Defender, flag "Buddha.dll" as a "False Positive" and automatically remove or quarantine it to protect the system.

Corrupted Installation: If a game repack or installation was interrupted, the file may be incomplete or corrupted.

Missing Dependencies: Sometimes the error appears if related system libraries like DirectX or Visual C++ Redistributables are outdated. Steps to Fix the Buddha.dll Error 1. Restore from Antivirus Quarantine This guide was written by the maintenance team

Before downloading new files, check if your current security software has already hidden the file. Open Windows Security or your third-party antivirus. Navigate to Virus & threat protection > Protection history.

Look for an entry related to "Buddha.dll" or a "Trojan/Hacktool" warning at the time you tried to launch the game. Select the file and choose Restore.

Crucial: Add the game folder to your Antivirus Exclusion List so it isn't deleted again. 2. Re-verify Game Files (Steam Users)

If you are using a legitimate copy through Steam, the system can automatically replace missing or broken DLLs. Right-click Black Ops 2 in your Steam Library. Select Properties > Installed Files.

Click Verify integrity of game files. Steam will scan for missing components and redownload them. 3. Update Drivers and System Libraries

Outdated system components can prevent DLLs from executing correctly.

Graphics Drivers: Update your GPU drivers through NVIDIA GeForce Experience or AMD Software.

DirectX: Ensure you have the latest DirectX End-User Runtimes installed.

Visual C++: Install the latest Visual C++ Redistributable packages (both x86 and x64 versions). 4. Run in Compatibility Mode

Some older games struggle with modern Windows 10 or 11 optimizations.

Right-click the game's .exe file or desktop shortcut and select Properties.

In the Compatibility tab, check Run this program in compatibility mode for and select Windows 8 or Windows 7. Check Run this program as an administrator. Click Apply and restart your PC.

Check out these video guides for visual walkthroughs on fixing Black Ops 2 DLL and launching errors: How to FIX Call of Duty: Black Ops 2 All Errors 3K views · 1 year ago YouTube · GaboFIX Black Ops 2 – How to Fix All Errors – Complete Tutorial 3K views · 2 years ago YouTube · TellMeHow How To Fix Black Ops 2 Not Launching 8K views · 7 months ago YouTube · Speedy Tutorials

The "buddha.dll" error in Call of Duty: Black Ops 2 typically occurs because the file has been quarantined by your antivirus or is missing from the game directory. This specific DLL is often associated with cracks for non-Steam versions of the game, making it a frequent target for security software.  1. Check Antivirus Quarantine 

Most "buddha.dll" errors are false positives where Windows Defender or another antivirus has removed the file. 

Open Windows Security: Go to Virus & threat protection > Protection history.

Locate the File: Look for an entry related to buddha.dll or a "Trojan" detection in your game folder.

Restore and Exclude: Select the file, choose Restore, and then add your Black Ops 2 game folder to your Exclusions list to prevent it from being deleted again.  2. Verify Game Files (Steam Version) 

If you are using the official Steam version and experience DLL errors:  Open your Steam Library and right-click Black Ops 2. Select Properties > Installed Files.

Click Verify integrity of game files. Steam will automatically redownload any missing or corrupted DLLs.  3. Manual DLL Replacement 

If the file is completely gone and cannot be restored, you may need to replace it manually. 

Source: Download the file from a community-trusted source like DLL-files.com.

Placement: Extract and copy buddha.dll into your Black Ops 2 installation folder (where the t6sp.exe or t6mp.exe files are located).

System Folders: In some cases, you may also need to paste it into C:\Windows\System32 (for 32-bit) or C:\Windows\SysWOW64 (for 64-bit systems).  4. Update Redistributables  Missing system libraries can sometimes trigger DLL errors. 

DirectX: Ensure you have the DirectX End-User Runtimes installed.

Visual C++: Download and install the latest Visual C++ Redistributable packages for both x86 and x64 architectures.  5. Additional Launch Fixes  If the game still won't start after fixing the DLL: 

Run as Admin: Right-click the game shortcut > Properties > Compatibility > check Run this program as an administrator.

Compatibility Mode: In the same tab, set the program to run in compatibility mode for Windows 7 or 8. 

The error was a mantra of frustration. Every time Leo double-clicked Call of Duty: Black Ops 2, the same grey box materialized, its cold white text a stone in his gut:

"Fatal Error: Missing buddha.dll"

He’d tried everything. Reinstalled the game three times. Verified file integrity until Steam’s progress bar became a meditation on futility. He’d scrubbed the registry, disabled his antivirus, even performed a dark ritual involving a Windows 7 compatibility mode and a prayer to the ghost of LAN parties past. Nothing.

It was 2 AM on a Tuesday, the kind of hour where the internet feels both infinite and empty. Leo slumped in his chair, the glow of his monitor bleaching the color from his cramped apartment. He wasn't a kid anymore; he had a mortgage, a back that ached when it rained, and a growing sense that joy was something he’d simply aged out of. All he wanted was one night. One night to run the ballistics matrix on Hijacked, to hear the chime of a killstreak, to feel like the nineteen-year-old who’d dominated the leaderboards.

In a fit of exhausted inspiration, he typed the error into a search engine not with hope, but with the mechanical obedience of a beaten man. He clicked past the first five pages of "fixes" that were actually malware ads. Then, on page six, he found a relic: a GeoCities-style page, all blinking Comic Sans on a black background. The URL was a string of numbers. The only content was a single line:

"Buddha.dll is not a file. It is a lesson."

Below that, a download link. No reviews. No comments. Just a 12KB file named peace.exe.

His rational mind screamed. This is how you get your identity stolen, Leo. But his rational mind had lost the argument three hours ago, when he’d started talking to his houseplant about the good old days. Important warning: Downloading custom DLLs from random forum

He downloaded it. He ran it.

No installation wizard appeared. Instead, a command prompt flickered open, its ancient green text typing itself out in a deliberate, unhurried rhythm:

> The error is not in the code. > The error is in the wanting. > You seek the explosion. The score. The victory. > These are the chains of samsara. > To find buddha.dll, you must first uninstall the self.

Leo snorted. "Great. A philosophical virus." He reached for his mouse to kill the process, but his hand stopped. The text continued:

> Close your eyes. Listen to the fan in your machine. > That is not noise. That is the sound of a billion electrons choosing the path of least resistance. > It is the universe meditating.

Against all logic, Leo closed his eyes. He heard the low hum of his GPU, the tick of the hard drive, the whisper of the air conditioner. For the first time in years, he wasn't trying to relax. He was just listening.

> Good. Now open them.

He did. The command prompt was gone. A new window had opened: a perfect, emulated copy of Black Ops 2. No splash screen. No main menu. He was already in a lobby. The map was Raid. His loadout was strange—a knife, a single smoke grenade, and a perk called "Equanimity" that he’d never seen before.

The match started. Players spawned. The usual chaos erupted—gunfire, grenades, the screaming of twelve-year-olds over voice chat. But Leo didn't move. His character stood still in the courtyard, the fountain splashing beside him.

An enemy player, a wolf-headed sweat-lord, slid around the corner, saw Leo, and stopped. He aimed. He fired a full magazine. Every bullet missed. Not by inches. By miles. The tracers curved around Leo’s avatar like water around a stone.

The sweat-lord screamed, "HACKER!" and disconnected.

Another player, a sniper on the balcony, took aim. Her crosshair settled on Leo’s head. She held her breath. And then, she let it out. She didn't fire. She typed in chat: lol. u ok?

Leo typed back: I think I'm finally okay.

He walked his character to the edge of the pool, sat him down, and put away his knife. One by one, the other players stopped fighting. They gathered around him. No one shot. No one teabagged. They just sat there in a silent circle on the marble floor, waiting for the timer to run out.

As the match ended, a final message scrolled across his screen:

"buddha.dll loaded successfully. The fix was inside you all along. Game on, little ghost."

Leo closed the laptop. He went to the window. The city outside was a sprawl of sodium-vapor lights and the distant rumble of the freeway. It was still broken, still loud, still the same world he’d wanted to escape fifteen minutes ago.

But for the first time, he didn't want to escape. He just wanted to be here.

He never played Black Ops 2 again. He didn't need to. The error was gone.

Errors involving Buddha.dll in Call of Duty: Black Ops 2 usually occur because the file is missing, corrupted, or has been quarantined by antivirus software as a false positive. Step 1: Check Antivirus Quarantine

Antivirus programs often flag buddha.dll incorrectly. Before downloading anything, check if your security software has blocked it.

Windows Defender: Go to Windows Security > Virus & threat protection > Protection history. Look for buddha.dll and select Restore if it was quarantined.

Add an Exclusion: To prevent the file from being deleted again, add the Black Ops 2 installation folder as an exclusion in your antivirus settings. Step 2: Verify Game Files (Steam)

If the file is missing or corrupted, Steam can automatically replace it. Open your Steam Library.

Right-click on Call of Duty: Black Ops II and select Properties.

Navigate to the Installed Files tab and click Verify integrity of game files.

Wait for Steam to detect and download any missing components. Step 3: Update Redistributables

The buddha.dll error can sometimes be linked to outdated DirectX or Visual C++ components.

DirectX: Run the DirectX End-User Runtime Web Installer from the official Microsoft Support site to ensure your libraries are current.

Visual C++: Download and install the latest Visual C++ Redistributable packages (both x86 and x64) from Microsoft. Step 4: Manual Replacement (Advanced) If the above steps fail, you can manually replace the file.

Download the correct version of buddha.dll from a reputable source like dll-files.com.

Place the file into the root directory of your Black Ops 2 installation folder (where the .exe file is located).

Alternatively, copy it to C:\Windows\System32 (and C:\Windows\SysWOW64 for 64-bit systems).

Pro Tip: Always restart your computer after installing new DLLs or redistributables to ensure the changes take effect.

The Buddha.dll error in Call of Duty: Black Ops 2 is a common issue typically encountered when launching the game. This error most frequently arises when the file—which is part of the game's security or DRM wrapper—is either missing, corrupted, or mistakenly flagged and quarantined by antivirus software. Common Fixes for Buddha.dll Errors

If you are facing this error, try these troubleshooting steps in order:

Check Antivirus Quarantines: Antivirus programs (like Windows Defender) often flag buddha.dll as a "false positive" and move it to quarantine. Open Windows Security > Virus & threat protection. Go to Protection history. If buddha.dll is listed, select it and choose Restore.

Add the game folder to your antivirus exclusion list to prevent it from happening again.

Verify Game Files: If you are using Steam, the platform can automatically detect and replace the missing file. Right-click Black Ops 2 in your Steam Library. Select Properties > Installed Files.

If a specific mod requires the DLL, you can add it manually. Only do this from trusted sources. Scanning downloaded DLLs with VirusTotal is advised.

Step-by-step: