After returning from overseas, my previously working outlook 2007 stopped working on my Gmail and two domain accounts, an ISP based a/c is ok. I enabled 2FA , generated an app password which worked on the default a/c , subsequent attempts to do the same for the other accounts failed until I logged out of my Google account and logged in with account number two as the default which then worked but account one stopped working.
I gave up on that and in an attempt to make it work disabled 2FA and allowed access to less secure apps, That didn’t work either and I still get constant windows popping up asking me to sign in.
As it’s an old programme, I decided to upgrade and downloaded a trial version of office 365, I now have two Gmail accounts that work, the third and the domain accounts do not ,and I can’t even open the domain account folders as I get an error .
Also office 365 is missing files from 2013 to the present day, anyone any ideas how I can go about fixing this mess, it’s all been working fine for years ,and also no issues with email on iOS only Outlook.