You may be unable to access the Windows Security app on your Windows 11 computer. And when you login to your account, the following error message appears:
SecurityHealthSystray: SecurityHealthSystray.exe - Bad Image \?\C:\Windows\System32\SecurityHealth\1.0.2303.27001-0\SecurityHealthSSO.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0xc000012f
In the error message, the platform version number varies depending upon the Security Platform version installed on the computer.
Cause
Error 0xc000012f happens if the module SecurityHealthSSO.dll has been corrupted. Replacing the corrupt module with a fresh copy from another computer should fix the issue.
Resolution
To resolve the issue, replace SecurityHealthSSO.dll with a fresh copy. Follow these steps:
- Create a folder named “Temp” on your C: drive — i.e., C:\Temp.
- Download the archive SecurityHealthSSO.zip (zipped, all versions).
- Extract the appropriate version of
SecurityHealthSSO.dllto C:\Temp. You need to extract the DLL that corresponds to the security platform version mentioned in the error message.
Let’s say the error message mentions the platform folder 10.0.27840.1000-0:
- Open an admin Command Prompt and run the following commands:
cd /d c:\windows\system32\securityHealth\10.0.27840.1000-0
takeown /f SecurityHealthSSO.dll /a
icacls SecurityHealthSSO.dll /grant *S-1-5-32-544:(F)
copy /y C:\Temp\SecurityHealthSSO.dll
(You should see the message “1 file(s) copied.” for the 3rd command.)
Important: If you receive an access denied error when copying the DLL, please boot into Safe mode and copy the DLL.
Restart Windows. To do so, right-click Start, click Shutdown, and click Restart.
Important: Clicking “Shutdown” and powering the unit on will not help.
File Hashes
| Security Platform | SHA256 Hash (Hyperlink opens VirusTotal.com) |
| 1.0.2311.17002-0 | F9905B2235BDAE5560E268F179E1F4976F28745BFE8C1BDDB0192322D0592033 |
| 1.0.2402.27001-0 | 76D6335B8A9B9D1F19268941A62D4E203B3A98E15B1E6F9320F3165AB2822FAF |
| 10.0.27703.1006-0 | 04791BEA96AC218BF17A1D3F3593BF17090209926B25B76AE6DA4C64BA575B81 |
| 10.0.27777.1008-0 | 5BD961E6C12B803A4E84271E8B8055FAFEE463D27A4191679D30622DE81CA48F |
| 10.0.27840.1000-0 | 635A311B52D94C034BDD8AC06556CD67B13209E60142DCF7CE751AF840664EE6 |
| 10.0.29429.1000-0 | 893D61C6EB3D91B427CE0AC7AC76A69C049ADDE790424E870A687FB09E71FFA3 |
| 10.0.29510.1001-0 | 0089A409717102685AB8C85A30020DF4EBD5A35F9965582B74BD68781A964449 |
| 10.0.29554.1001 | 0F6840B9464AAAB29C52732859106E2B74BDB77DE6ED83719C0EC7143847F2B6 |
That’s it. This should fix the SecurityHealthSystray error.
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This worked for me after trying LOTS of other methods. Well done mate 🙂
Genuis!
Thank you so much. Worked for me after many months!
Work perfectly, well done dude Thanks
Bless you @ramesh. Not just for finding that version but for having CLEAR & concise instructions. Took me less than 10min to fix it. Been pulling my hair out all weekend.
Awesome! Great Job! Thank you very much.
You have cured my annoyance, thank you so much!
it fixed the pop up problem but it left me with a black windows secuirty tab. whenever i try to access windows security or defender it’s just a black tab
thank you so much its worked!!!!!!!!!
dude you are awsome 🙂
I got everything else; however, when I try to run the fourth command, it says, “The system cannot find the file specified,” and yes, I did extract the DLL to c:\temp…
After I’ve tried everything this FINALLY worked for me. Thank you so much!!
Hi please kindly help with this issue.. windows security cant open.. i am using windows 10
Здравствуйте!
Все сделал, ошибка перестала появляться, но безопасность windows так и не открывается
thanks a lot. this worked for me 100% :-}
Are you a God??
Like almost all on here I pulled my hair out and went crazy trying to fix this problem. Now I can finally sleep at night without haunting nightmares about this issue.
I like a few on here was getting the file not found when trying to run the 4th command line. I am a bit embarrassed to say that in my haste I extracted the file to C:\Temp and then failed to go into the correct folder and pull the right .dll file into the main folder for C:\Temp.
So whereas I had it say
C:\Temp\SecurityHealthSSO\10.0.29429.1000-0\SecurityHealthSSO.dll
when it should have simply been
C:\Temp\SecurityHealthSSO.dll <—- where that file was pulled from the correct folder, which in my case was obviously 10.0.29429.1000-0
So yes, like he stated make sure you get the actual .dll file into C:\Temp
Ajudou muito! Muito obrigado por compartilhar esse conhecimento.
Work perfectly, well done dude Thanks
Thank you so much. Like others, I tried many other solutions and continuously got the same error message at each start.
Now it’s finally OK.
I solved it but Windows Security doesn’t open, how do I fix it?
@Leonardo: Check this article Windows Security is Blank in Windows 11