Microsoft Security | Microsoft Defender | Other
Additional Microsoft Defender tools and services that provide security across various platforms and environments
I cant log in to microsoft defender.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 72%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anon432
5
Reputation points
I was having issues with defender, so I repaired it, then tried again, I have reset it, still nothing, I have uninstalled and reinstalled it, nothing. I am connected to the internet. All I get is this screen telling me that I am unable to log in. Any help would be appreciated.
Microsoft Security | Microsoft Defender | Other
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(291.2, 48%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKS%3C/text%3E%3C/svg%3E)
kirollos salama 0 Reputation points2026-10-05T13:27:20.38+00:00 I am experiencing the same issue. Microsoft Defender worked without any problems on Windows 11 25H2, but after upgrading to Windows 11 26H2, it started asking me to sign in. Every time I try to sign in, I receive the following message: “Unable to login to Microsoft Defender.”
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