Cannot save document settings preferences

Same (general) problem here.  Adobe Acrobat Pro, mass licence, 2023.008.20470, auto updates on, win 11 pro. Every time the program is closed, all changes to preferences are lost. I tried both with open documents, and with no document open. Problem exists for almost a year now.

I have the same problem, only mor convoluted. I'm admin for lots of devices in our domain. only some of which cannot save preferendes (all on win10 with Reader Version 2022.003.20314, please don't tell me to update, the problem has existed on only some devices and for several versions, updating did not help an i have no reason to expect that it will now).

On some devices Acrobat Reader DC just refuses to savesettings. After lots of analysis we found tht changeing the Registry values manually does work as a quick fix for some settings. Although ofc does not change the root problem. 

After analysis via procmon, we found that Acrobat Reader runs mostly normally, but refuses to write preferences to the registry, while not being in any way stopped from doing so by missing acces rights or any anytivirus software, it just doesn't perfrom the action to change certain registry keys pertaining to the Preferences.