Hi JamesMcVoy Good day.
I am Louie, a Microsoft Community member and a fellow Windows 10 user like you. I hope I can help you on your concern.
Its possible the Windows Live Mail got corrupted after the update, please perform the following below in the registry:
- click Windows Key + R (to open run)
- in the run type and enter: REGEDIT
- Go to Computer > HKEY_CURRENT_USER > SOFTWARE > Microsoft > Windows Live Mail
- Create these 3 DWORD entries (if they didnt exist) or change to 1 if they exist
RecreateFolderIndex = 1
RecreateStreamIndex = 1
RecreateUIDLIndex = 1
- Restart Windows Live Mail.
Sincerely
Louie
--- Updated on 5/1/21 and no emails could be received/sent. Did exactly as instructions above. Worked perfectly! Thank you Louie.