Since upgrading to Catalina I keep getting this error with each email that comes in. "Invalid base64 string for MIME content.". This is really annoying and making me regret doing this upgrade.
Does anyone have a fix?
MacBook
I thought this was proposed as a fix before and the problem came back.
As problem here with MSN Exchange account mailbox. Can Apple provide us the fix / workaround for this please as quick as possible ?
thanks
jp
Thanks for the update. How do some folks think they have fixes? This problem only seems to be between Apple and MS Exchange accounts.
The problem seems to be in Catalina and the IOS mail App.
Who are you talking about? They is no fix to this unless apple fixes Catalina.
Ok apple YOU BROKE OSx EMAIL. An email client that's unusable? This is a new low.
Thank you very much, but would you be kind enough to elaborate? Remove all rules, quite mail, and go back? Or, is there an another sequence of operations?
delete or disable? and if delete, once you re-add the rules does the problem come back?
I hope you meant OS and not iOS.
This workaround was identified back in January. Apple still hasn’t fixed it. Very disappointed in Apple.
Did you get a fix for this problem? I am having the same issue since I installed Catalina 10.15.5. Only on my Imac and not on my Mac book Pro.
Invalid base64 string for MIME content.
