Windows 10: Windows Malicious Software Removal Tool runs every day: Is this run schedule correct?

The Windows Malicious Software Removal Tool MRT or MSRT, MRT.exe log file C:\WINDOWS\debug\mrt.log shows that starting in April of 2022, it started running every day, and sometimes more than once per day. Before then, the log file shows that it ran just once-a-month, when it was prompted by Automatic Updates on Update Tuesday. From what I have read about MSRT, the monthly run schedule was in the original design, or at least the design since ~ 2015, but I can't find anything more recent that acknowledges a change to a daily run.It only runs for 10-15 minutes early in the morning, but it c

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malicious software removal tool

Hi Alex,

We would like to know more about the issue by answering the following questions below:

• Have you tried to uninstall and reinstall Microsoft Windows Malicious Software Removal Tool?
• What is the last action taken before this issue happens?

We suggest that you check this link for more details regarding your issue:
The Microsoft Windows Malicious Software Removal Tool (MSRT) helps remove specific, prevalent malicious software from computers that are running supported versions of Windows.

We look forward to your response.

 

KB890830 Windows Malicious Software Removal Tool 5.48 - May 2017

Hi D4ni3l,

It is not a tool like protection software, it scans and removes malware but nothing more.

These are the different key ways from which the tool differs in comparison with protection software
From Malicious Software Removal Tool in Windows Windows 10 Security System Tutorials

 

Malicious Software Removal Tool in Win10 Home won't run

This is what a normal log should look like (if the tool is not being run manually).

Microsoft Windows Malicious Software Removal Tool v5.43, December 2016 (build 5.43.13300.0)

Started On Tue Dec 13 23:47:28 2016
Engine: 1.1.13303.0

Signatures: 1.233.993.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Tue Dec 13 23:48:41 2016

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.44, January 2017 (build 5.44.13400.0)

Started On Wed Jan 11 00:39:49 2017
Engine: 1.1.13303.0

Signatures: 1.233.3409.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Wed Jan 11 00:41:05 2017

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.45, February 2017 (build 5.45.13501.0)

Started On Wed Feb 22 22:58:43 2017
Engine: 1.1.13407.0

Signatures: 1.235.1858.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Wed Feb 22 22:59:53 2017

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.46, March 2017 (build 5.46.13601.0)

Started On Tue Mar 14 15:21:37 2017
Engine: 1.1.13504.0

Signatures: 1.237.571.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted MAPS Report

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Tue Mar 14 15:22:42 2017

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.47, April 2017 (build 5.47.13703.0)

Started On Tue Apr 11 15:59:01 2017
Engine: 1.1.13601.0

Signatures: 1.239.313.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Tue Apr 11 15:59:57 2017

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.48, May 2017 (build 5.48.13801.0)

Started On Tue May 09 19:32:16 2017
Engine: 1.1.13701.0

Signatures: 1.241.491.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted MAPS Report

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Tue May 09 19:33:28 2017

Return code: 0 (0x0)
---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.48, May 2017 (build 5.48.13803.0)

Started On Mon May 22 19:29:02 2017
Engine: 1.1.13704.0

Signatures: 1.243.729.0

Run Mode: Scan Run From Windows Update

Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Mon May 22 19:30:14 2017

Return code: 0 (0x0)

---------------------------------------------------------------------------------------

Microsoft Windows Malicious Software Removal Tool v5.49, June 2017 (build 5.49.13902.0)

Started On Wed Jun 14 02:22:00 2017

Engine: 1.1.13804.0

Signatures: 1.245.112.0

Run Mode: Scan Run From Windows Update
Results Summary:

----------------

No infection found.

Successfully Submitted Heartbeat Report

Microsoft Windows Malicious Software Removal Tool Finished On Wed Jun 14 02:23:45 2017

Return code: 0 (0x0)