Adobe: Reader Xi -11.0.01-

According to Adobe’s release notes, 11.0.01 fixed:

No new major features were added; the update was primarily stability and security-focused. adobe reader xi -11.0.01-

Adobe Reader XI was launched in October 2012. Version 11.0.01 arrived shortly after as a minor but critical patch to the initial release (11.0.00). Unlike today’s continuous cloud updates, Adobe operated on a numbered release cycle. Adobe Reader XI was the eleventh major generation of the free PDF viewer. According to Adobe’s release notes, 11

The 11.0.01 build was designed to address immediate post-launch bugs, including crashes when rendering complex PDF forms and issues with the then-new "Protected Mode." For users still operating on Windows XP SP3 (which Microsoft had stopped mainstream support for in 2009), Adobe Reader XI was the final frontier—the last version that would ever be certified for that OS. No new major features were added; the update

One of the most critical aspects of Adobe Reader XI -11.0.01- was its security architecture. Building on Reader X’s "Protected Mode" (a sandbox similar to Chrome’s), version 11.0.01 hardened this feature significantly.