The latest update started to kick in to our computers on Friday and we are getting high CPU usage and 100% memory usage the moment Acrobat Reader is opened.
Task manage shows the culprit is AcroCEF.exe:
I have tested it with 3 accounts, Domain Admin, Domain Staff, and Local User. The Local account doesn't have any issues, it is just with the domain accounts.
Antivirus isn't blocking it. Firewall isn't blocking it. Installation repair doesn't fix. Reinstall doesn't fix.
We are deleting the file AcroCEF.exe which is letting Reader run for what most of our staff use, but this is not a permenant fix as an update will make it reappear.
Clients are running Windows 10 21H1, Adober Reader version 2021.007.20091.
1 Correct answer
I solved my problem.
I did carefully rewrite the proxy.pac file, and there was a bad char somewhere.
I suggest you to rewrite yours.
The shame is that acrobat does not catch the exception and goes in loop, but if your file is without errors it goes smooth.
Again, clean your proxy.pac, then put a rule at a time and test it, you'll find your error.
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