adding gmail account
Deleted gmail account to solve problem. Cannot re-add--error 400. Same error trying to add other new gmail account. Other gmail accounts already in Mail OK. Account in question OK on phone.
iMac 21.5″, macOS 12.7
Question marked as
Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and try adding the account from there. Reboot normally.
NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following;
• Verifies your startup disk and attempts to repair directory issues, if needed
• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)
• Prevents Startup Items and Login Items from opening automatically
• Disables user-installed fonts
• Deletes font caches, kernel cache, and other system cache files
NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.