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  1. Acrobat Reader patch updates bloat Windows Installer folder

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    1 comment  ·  Acrobat for Windows and Mac » Installation and Licensing  ·  Admin →
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    Martin Žeravík supported this idea  · 
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    Martin Žeravík commented  · 

    I can confirm this issue on Windows 11 Pro with Adobe Acrobat DC.

    My `C:\Windows\Installer` folder had grown to **165.72 GB**, including 263 MSP files larger than 500 MB (151.81 GB combined).

    I resolved the problem by enabling the following registry setting:

    `HKLM\SOFTWARE\Policies\Adobe\Adobe Acrobat\DC\FeatureLockdown`

    `PatchCleanFlag` (DWORD) = `1`

    After performing a normal Acrobat update:

    - Installer folder decreased from **165.72 GB to 10.27 GB**.
    - Large MSP files decreased from **263 to 4**.
    - **155.45 GB of disk space was recovered.**

    No Acrobat reinstallation or manual deletion of installer files was necessary.

    This demonstrates that Acrobat already has a mechanism to clean up obsolete patches. Adobe should enable this cleanup automatically rather than allowing the Windows Installer cache to grow indefinitely.