Forum Discussion
BrittanyN
Jan 09, 2026Copper Contributor
Classic Outlook Keeps "Not Responding" and freezing
Hi there, I tried to scour for something similar, but I couldn't find anything and/or it didn't work - so here I am - hopefully someone can help. Okay the facts - I use Classic Outlook (CO movi...
Jan 11, 2026
CO can be sluggish for a few reasons, here is my list to check:
Windows updates
Office updates
Size of PST files of the AOL POP
Size of OST file (for the 3 domained accounts)
Antivirus is a leading cause of sluggish CO
Firewalls
VPN
If you are still having problems, happy to try to help if you answer those questions.
Lisa
GrotonMARealtor
Jan 22, 2026Copper Contributor
Lisa, what is going on with this Outlook Classic issue? I read that MS is planning a February fix? THAT is unacceptable. Completely unacceptable. I can't imagine the number of Classic users that can't use Classic at all...