A few notes- 1. The only registry value that is set correctly is iLogLevel. The rest can be removed. 2. Can you please remove posted log sample and instead send me full AdobeARM.log files from User\Temp folder and Windows\Temp folder? 3. The Source referenced in the error is what MSI (Microsoft Installer) Engine needs to successfully update. In relation to Acrobat, it is original base installer, namely AcroPro.msi (installer database) and Data1.cab (file archive) If you are able to update from Acrobat menu, but auto update fails running in the System context, this suggest that Source actually exists, but not available to the process running in the System context. Can you check if original Acrobat sources are cached under path that looks like this - C:\Program Files (x86)\Adobe\Acrobat 2017\Setup Files\[GUID] ? Alternatively, you can download AcroSize.exe tool from https://drive.google.com/file/d/1ag0rlOL2mZfQFmLWPpBx-GTSVVfZipaN/view?usp=sharing Run it, select "Start Acrobat" button, wait for several seconds and send me AcroSize.log file from User\Temp folder?
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