2021 !6" MBP w/ M1 max; 12.6.3 (21G419). Suddenly, all files (eg. "iPhone_14_Pro_PER_Sept2022.pdf" downloaded from apple) won't open, with message “iPhone_14_Pro_PER_Sept2022.pdf” is damaged and can’t be opened. You should move it to the Trash.
Have tried removing com.apple.systempreferences.plist and restarting; same problem. Problem with .ics files as well.
MacBook Pro Apple Silicon
Are you using any optimizer like Advanced Mac Cleaner or MacKeeper. Both these utilities damage the Launchservices files which help the Finder to open files.
Remove any optimization utility with Reggie Answorth's AppDelete.
Then fix opening the documents with click once, select Get info from the file menu and change the Open With properties for the various documents.
Are you using any optimizer like Advanced Mac Cleaner or MacKeeper. Both these utilities damage the Launchservices files which help the Finder to open files.
Remove any optimization utility with Reggie Answorth's AppDelete.
Then fix opening the documents with click once, select Get info from the file menu and change the Open With properties for the various documents.
restart the computer in safe mode (holding the shift key). Then see if your downloads are complete. Note the size of the file doing a click once, and Finder menu -> Get info. Any 0k file did not completely download, and you'll want to find the original site and make sure the download is completed.
Thanks for the reply. The files are completely downloaded, that is not the problem. The problem is the system won't allow *any* downloaded pdf or ics files to open.
I can open both .ics files in calendar (Import) and pdf's in Preview (Open); those same files won't open from Finder.
Can't open downloaded files
