Forum Discussion
akiva31
Apr 26, 2024Copper Contributor
Microsoft Defender will not let me log in on Windows 11
I have a subscription to the Personal Microsoft 365 plan which includes Microsoft Defender. When I try logging into Microsoft Defender on my Windows PC, I receive an error message stating "Couldn't s...
39_初音ミク_39
Jan 08, 2026Copper Contributor
I have same problem as you have. I've done all of the thing that could be found on the internet, but nothing solved my issue. No VPN, legit subscription, up to date applications, but does not letting me to sign in..... Did you solved the problem? Please share if you have solved T_T
mizladiiv
Jun 26, 2026Copper Contributor
If you have any other antivirus software such as McAfee, Windows defender won't let you sign in