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PDF Gets Unwanted Password Protection

There was a bug in versions of Acrobat Reader from about 2018 (example version 2018.011.20055) where certain PDF documents, when modified and saved, would be given password protection and there was no way to know what the password was, so the document could never be opened again.

There is an update for Acrobat which fixes this problem. In Acrobat Reader use Help > Check for Updates.

Similar Issue in Preview

Note: there is a similar issue with Preview version 11. Fix with:
sed -i '' -e 's/\/EncryptMetadata false/\/EncryptMetadata true/g' file.pdf



I usually write a blog post about once a week. The latest post can be viewed here: Avoid Microsoft: If you don't really like computers much you could make things a bit better for yourself. (posted 2024-12-04 at 12:05:50). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-08-22 Stirring Up Trouble: Let's just get every view out there and fairly debate them..
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