: Some users reported crashes because Microsoft Edge was uninstalled or disabled, as ACDSee relies on it for certain interface elements.

. If you cannot open the program at all, you may need to move your database files (usually found in %LocalAppData%\ACD Systems\Catalogs

: Some users have found that excluding their primary image folders from real-time antivirus scanning significantly reduces "hangs" and crashes during file indexing.

: Some users have found that if you simply drag the error window out of the way or click back into the main ACDSee window without closing the error message, the program may remain functional. Isolate the Startup Folder

To disable graphics acceleration:

Background processes like "Face Detection" can cause intermittent crashes, especially in newer versions.