Is mshta.exe a dangerous file?

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  • Updated 2 years ago
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I keep getting a message that mshta.exe is dangerous and has been blocked, but a Google search says it is a legitimate file, part of Internet Explorer. Which is it?
Photo of judroberts


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Posted 3 years ago

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woodartisan55, Champion

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Hi judroberts. I can't say for certain, but I did find this on the 'net:

"Hello and welcome. The legitimate Mshta.exe will be found at C:\WINDOWS\System32\mshta.exe
Verify the disk location to make sure it is not malware related. Quite often virus writers use similiar names or place the same names in other folders in an attempt to fool you into thinking it is a good file. This mshta.exe file is a critical Windows file, it is used to open hta file types."

So it is possible that the file is corrupted and I would think that if it were not, Trend would not call it out. I would say that further investigation is warranted.

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TM_L, Official Rep

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Hi Tim, thanks for assisting!

Hi @judroberts, welcome to Trend Micro Community! 

To answer your question, as @woodartisan55 mentioned, mshta.exe is a part of Microsoft Windows Operating System which is needed to execute. HTA files.

If your Trend Micro Security keeps detecting mshta.exe, we suspect that there are some malicious files trying to execute mshta.exe. 

Could you try the following steps and check if the same symptom occurs:

Step1: Run an update manually
  1. Right-click on the Trend Micro system tray icon at the bottom right corner of your screen.
  2. Click "Check for Program Updates" and the About Your Software windows will appear and will automatically check for available updates.
Step2: Disconnect your Internet 

Step3: Perform a Full Scan
Running a scan using your Trend Micro Security software - refer to "Performing Quick or Full Scan"

Step4: Connect your Internet again

Please let us know if you were able to resolve your issue by trying the above. If still unsuccessful, we'll have to pass you to our support center for further investigation. Thank you.

Trend Micro Home Users Community
Photo of jdg


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I have the sam problem since a couple of day. I perform all your suggestions without any success.
Wath I have further to do?
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TM_Ian, Employee

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Hi jdg!

You may refer to the reply on your comment on this thread:


Have a great day! :)

Trend Micro Home Users Community

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