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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Answer accepted by question author
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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32 additional answers

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  1. Anonymous
    2025-05-24T05:57:16+00:00

    No. Dragging to Temp won't work. See instructions in the original post.

    // Also, what do you mean by exact error message?//

    I'm referring to the error you're trying to fix.

    I can't seem to extract the 10.0.27777.1008-0 folder from the zip file to Temp as even though it says downloaded as a compressed zip file I can open the folder and click on the 10.0.27777.1008-0 folder but it doesn't give me an option to extract a single folder only, or am I doing something wrong?

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  2. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-05-23T17:42:57+00:00

    No. Dragging to Temp won't work. See instructions in the original post.

    // Also, what do you mean by exact error message?//

    I'm referring to the error you're trying to fix.

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  3. Anonymous
    2025-05-23T17:31:51+00:00

    The last two commands didn't work because you didn't download the zip file mentioned earlier in this thread. The zip file (cited by the original poster) must be downloaded first.

    Also, post the exact error message you see regarding "SecurityHealthSSO.dll".

    Hi, I did download the zip file and it was in my downloads folder, but what I did after was drag and drop 10.0.27777.1008-0 file into my Temp folder from the folder in downloads, is that correct?

    Also, what do you mean by exact error message?

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  4. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-05-23T16:05:32+00:00

    The last two commands didn't work because you didn't download the zip file mentioned earlier in this thread. The zip file (cited by the original poster) must be downloaded first.

    Also, post the exact error message you see regarding "SecurityHealthSSO.dll".

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