Message "SecurityHealthSSO.dll" contains an error.

Anonymous
2025-04-22T16:32:31+00:00

I am getting a popup message on booting into Windows 11. It says, "C:\Windows\System32/SecurityHealth\10.0.027777.1008-0\SecurityHealthSSO.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original install media or contact your system administrator or the software vendor for support."

This is essentially the same as others have reported. Like here - https://answers.microsoft.com/en-us/windows/forum/all/message-securityhealthssodll-contains-an-error/bfbe2ce5-b37c-423d-a84a-a0869db7aee0

It includes a link to another website - https://www.winhelponline.com/blog/securityhealthsystray-bad-image-0xc000012f/

Following those instructions, I can't successfully complete each step. In the second one, it asks us to:

  • Extract the appropriate version of SecurityHealthSSO.dll to C:\Temp. You need to extract the DLL that corresponds to the security platform version mentioned in the error message.

I had trouble with this step. I was not sure how to extract the .dll file to the right C:\Temp folder. Also, when I tried to create a new folder named Temp, it asks me if I wanted to merge it with C:\temp. I tried just copying the Dll file, but that did not work. It says "The system cannot find the path specified." when I type "cd /d c:\windows\system32\securityHealth\10.0.027777.1008-0" The other commands seemed to run fine.

I have tried a few other solutions but nothing has worked so far

Windows for home | Windows 11 | Performance and system failures

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Ramesh 183.6K Reputation points Volunteer Moderator
2025-04-22T16:49:30+00:00

Please run:

  • cd /d c:\windows\system32\securityHealth\10.0.27777.1008-0
  • takeown /f SecurityHealthSSO.dll /a
  • icacls SecurityHealthSSO.dll /grant *S-1-5-32-544:(F)

Post the screenshot of the Command Prompt window.

Now, copy the downloaded "SecurityHealthSSO.dll" file to "C:\Windows\System32\SecurityHealth\10.0.27777.1008-0" using File Explorer. Overwrite the target file when prompted.

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  1. Anonymous
    2025-05-24T19:06:29+00:00

    I only have two questions remaining:

    1. Can I delete the Temp folder?
    2. Why does it seem like when I go to Settings>Privacy & Security and then click on Windows Security, the whole settings app freezes? Does this have to do with the corrupted SecurityHealthSSO.DLL file I had beforehand? But the issue still persists now.
    1. The C:\Temp folder can be deleted.
    2. Has the system been restarted after copying the file?

    Yes, I restarted twice to verify if the message had gone

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  2. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-05-24T16:27:40+00:00

    I only have two questions remaining:

    1. Can I delete the Temp folder?
    2. Why does it seem like when I go to Settings>Privacy & Security and then click on Windows Security, the whole settings app freezes? Does this have to do with the corrupted SecurityHealthSSO.DLL file I had beforehand? But the issue still persists now.
    1. The C:\Temp folder can be deleted.
    2. Has the system been restarted after copying the file?

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  3. Anonymous
    2025-05-24T16:19:40+00:00

    Ok, it worked and I do not have the popup anymore upon restarting (verified again). What I did was:

    Downloaded SecurityHealthSSO.DLL file from the link

    Copy-pasted it into C:\Temp

    Ran the following commands:

    • cd /d c:\windows\system32\securityHealth\10.0.27777.1008-0
    • takeown /f SecurityHealthSSO.DLL /a
    • iacls SecurityHealthSSO.DLL /grant *S-1-5-32-544:(F)
    • copy /y C:\Temp\SecurityHealthSSO.DLL

    All commands ran fine as per the guide. Thank you very much Ramesh for the help and patience with me!

    I only have two questions remaining:

    1. Can I delete the Temp folder?
    2. Why does it seem like when I go to Settings>Privacy & Security and then click on Windows Security, the whole settings app freezes? Does this have to do with the corrupted SecurityHealthSSO.DLL file I had beforehand? But the issue still persists now.

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  4. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-05-24T16:07:48+00:00

    After downloading SecurityHealthSSO.DLL file and copy and pasting it inside C;\Temp folder do i just follow the rest of the commands?

    Yes. Run these commands:

    • cd /d c:\windows\system32\securityHealth\10.0.27777.1008-0
    • takeown /f SecurityHealthSSO.dll /a
    • icacls SecurityHealthSSO.dll /grant *S-1-5-32-544:(F)
    • copy /y C:\Temp\SecurityHealthSSO.dll

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