The SecurityHealthSystray.exe - Bad Image error

Question

The SecurityHealthSystray.exe - Bad Image error

Derek 0

Error:

The SecurityHealthSystray.exe - Bad Image error (error status 0xc000012F)

Summary:
I have tried plenty of different fixes and none seem to work. I noticed when I was trying to open Windows Security, the screen would be a plain black screen or the Windows Security Logo followed by the application closing by itself.

*No third party security software.

Notes:

In the System32\SecurityHealth file there are 3 items: 10.0.29510.1001-0, 10.0.29554.1001-0 and SecurityHealthSetup

Attempts:

I have run the SecurityHealthSetup and restarted resulting in the same issues.
I have run DISM and System File Checker and that resulted in the same.
Additional I re-installed the previous update 26h2 as repair. Nothing changed
Downloaded a new SecurityHealthSetup.zip and still the same results.
When into Installed Items > System Components and Repaired and Reset the Windows Security and neither fixed the problem.
I ran Get-AppxPackage -AllUsers Microsoft.SecHealthUI | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppxManifest.xml"} and that didn't work either.

I have read plenty of Q&A's on here and would like to know if there is any possible to fix this issue.

0 comments

2 answers

Your answer

Answer 1

Ramesh 182K Volunteer Moderator

Great. Now, please download the following file:

https://catalog.s.download.windowsupdate.com/d/msdownload/update/software/defu/2026/07/securityhealthsetup_21fb0c228dbf70d24ecb707b0ee9f97c2786961f.exe

After downloading it, right-click on the file and click Run as administrator. It upgrades the Windows Security Platform version to 10.0.29628.1000.

Derek 0 Reputation points

2026-10-04T04:01:35.2433333+00:00

Thank you again. I was able to run that exe and check the version is 10.0.29628.1000
Ramesh 182K Reputation points Volunteer Moderator

2026-10-04T04:07:14.88+00:00

Glad to hear that.

If all is resolved, feel free to mark the answer for this thread. Otherwise, please let me know if there's anything else I can help you with.

Answer 2

Ramesh 182K Volunteer Moderator

Hi Derek,

Open PowerShell and run the following command:

gci -recurse "C:\Windows\System32\SecurityHealth\*"  -Include *.exe, *.dll | Get-AuthenticodeSignature

Copy the output to a text file and upload it in your reply.

Derek 0 Reputation points

2026-10-04T02:56:57.5033333+00:00

SignerCertificate.txt
Here are the results.
Derek 0 Reputation points

2026-10-04T02:57:47.26+00:00

Also, thanks for the quick reply.

Ramesh 182K Volunteer Moderator

Run these commands from admin Command Prompt.

cmd.exe
cd /d C:\Windows\System32\SecurityHealth\10.0.29554.1001-0
takeown /f SecurityHealthHost.exe /a
takeown /f SecurityHealthSSO.dll /a
icacls SecurityHealthHost.exe /grant *S-1-5-32-544:(F)
icacls SecurityHealthSSO.dll /grant *S-1-5-32-544:(F)
copy /y C:\Windows\System32\SecurityHealth\10.0.29510.1001-0\SecurityHealthHost.exe
copy /y C:\Windows\System32\SecurityHealth\10.0.29510.1001-0\SecurityHealthSSO.dll

Post the output.

Derek 0 Reputation points

2026-10-04T03:25:27.1966667+00:00

Those commands fixed the problem. Thank you so much for the assistance.