Click-to-Run (C2R) is a deployment technology used by Microsoft for Office products, including Office 2013 and Office 2019. It allows users to install Office directly from the internet by clicking on a link, rather than purchasing a physical copy or downloading an installation package from a third-party site.
After researching community posts (MDL, Ru-Board, etc.), the so-called “644 Lite” typically refers to:
Why you should avoid it:
| Risk | Explanation | |------|-------------| | Malware | Modified Office installers are common vectors for backdoors, miners, and keyloggers. | | No updates | You cannot get security patches, leaving your PC vulnerable. | | License violation | Piracy penalties for businesses can reach $150,000 per instance. | | Stability | Missing dependencies cause random crashes. | Click-to-Run (C2R) is a deployment technology used by
🛑 There is no legitimate “644 Lite” version from Microsoft.
Step 1: Download ODT from Microsoft.
Step 2: Edit the configuration.xml file to include only apps you want (e.g., Word, Excel).
Example configuration.xml for Office 2019 (only Word, Excel, PowerPoint): Why you should avoid it: | Risk |
<Configuration>
<Add OfficeClientEdition="64" Channel="PerpetualVL2019">
<Product ID="ProPlus2019Volume" PIDKEY="Your-Product-Key">
<Language ID="en-us" />
<ExcludeApp ID="Access" />
<ExcludeApp ID="Outlook" />
<ExcludeApp ID="OneNote" />
<ExcludeApp ID="Publisher" />
<ExcludeApp ID="Skype for Business" />
</Product>
</Add>
</Configuration>
Step 3: Run setup.exe /configure configuration.xml
→ Result: Installed size ~700 MB instead of 3+ GB.
Choose “Lite” installation profile:
Disable additional components (for max lite): 🛑 There is no legitimate “644 Lite” version
Choose language: English (or your preferred). Remove all other languages.
Select “Download and Install”:
Wait for installation – a CMD window will show progress. Do not close it.
Finish: Click “Exit” when done. Office Lite is now installed.