Copy link to clipboard
After loading Big Sur, my pdf files that were created 7-10 days ago and earlier, failed to open.
The error message says that the file cannot be opened "because it is either not a supported file type or because the file has been damaged."
Has anyone else experienced this and if so, what was the remedy?
There is no chance at all of using old apps like Acrobat XI on Big Sur. but that doesn't explain how you got that message.