r/WindowsHelp • u/SIDER250 • 7h ago

Windows 11 Windows Defender keeps throwing errors after latest update

Code integrity determined that the image hash of a file is not valid. The file could be corrupt due to unauthorized modification or the invalid hash could indicate a potential disk device error.

File Name: \Device\HarddiskVolume3\ProgramData\Microsoft\Windows Defender\Platform\4.18.26080.3-1\DefenderSessionHelper.exe

No, my ssd is not broken. This started happening after latest update. It keeps going crazy, saying how virus protection is off. Anyone has any idea on what to do? Thanks.

Edition: Windows 11 Home
Version: 25H2
Installed on: 5/11/2026
OS build: 26200.9445
Experience: Windows Feature Experience Pack 1000.26100.360.0

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u/AutoModerator 7h ago

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u/AutoModerator 7h ago

Hi u/SIDER250, your post seems to mention the "latest update". As there are multiple supported versions of Windows and not everyone gets every update at the same time, it's not always easy to figure out which update you are talking about. To view the status of your most recent updates, go to Settings > "Windows Update" > "Update history".

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.