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
    2025-04-29T11:19:54+00:00

    Hi, I have the same issue and am going to follow through these steps when I get home. I wanted to ask, where did the file go when downloaded?

    Was it just to the downloads folder and you could directly ctrl+c, ctrl+v the new one to overwrite the old one?

    Apologies if this is a stupid question, I haven't ever had to do anything like this and want to be informed.

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  2. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-04-22T20:04:03+00:00

    Yes, it seemed to work. The copy command outputted that it ran successfully.

    I then rebooted. Overjoyed to not see that dang message pop up. I then went and rebooted again just in case. Still not reocurrance

    :)

    Glad to hear that.

    Thanks for the update.

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  3. Anonymous
    2025-04-22T19:48:18+00:00

    Yes, it seemed to work. The copy command outputted that it ran successfully.

    I then rebooted. Overjoyed to not see that dang message pop up. I then went and rebooted again just in case. Still not reocurrance

    :)

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  4. Ramesh 183.6K Reputation points Volunteer Moderator
    2025-04-22T18:12:29+00:00

    Ok. Let me know if it works. I'm not sure if the copy command you ran was successful because it's not visible in your screenshot.

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