Mmc has detected an error in a snap in

Published: August 18, 2017 · 12:38 PM \ Applies to: Troubleshooting, Windows 10, Windows 7, Windows 8.1

If you"re getting "MMC has actually detected an error in snap-in and also will unload it" message while functioning through snap-ins in Windows 10/8/7, here"s how to solve it.

You watching: Mmc has detected an error in a snap in

We all know Microsoft Management Console (MMC) manages snap-ins in Windows OS. Snap-ins such as Group Policy Editor, Device Manager, Event Viewer and so on and so on comes under MMC management. Thus if a snap-in is not functioning, you may should troubleshoot MMC quite than the snap-in.

Recently, we came about an concern wbelow an error occurs in a snap-in and MMC has to unfortunately unpack it to proccasion your machine from any kind of unsupposed harm. In some instances, this could also be connected as snap-in fairesulted in initialize.

The precise error message is as adheres to, in this case:

MMC has actually detected an error in snap-in and also will certainly unload it.


As you can watch in the above presented error message, you’ve 2 choices. You have the right to either report the error and shut dvery own MMC or unfill the snap-in and also let MMC be running. Most of these sort of errors deserve to be fix by simply rebooting your device. You might run built-in troubleshooters in Windows 10, such as Hardware and also Devices, System Maintenance troubleshooters to deal this worry.

However before, if the trouble still occurs also after restarting/troubleshooting the machine, you deserve to attempt the fixes pointed out below:

FIX: ‘MMC Has Detected An Error In A Snap-in And Will Unfill It’ In Windows 10/8/7

FIX 1 – Using System Properties

1. Press 

 + R and form sysdm.cpl in Run. Click OK or press Enter essential.


2. In System Properties window, switch to Advanced tab, click Environment Variables.


3. Next, in the Environment Variables sheet, under System variables, highlight Path Variable, then click Edit.


4. Finally, add the following values to the Variable value and also click OK. Make sure you perform not rerelocate or adjust existing Variable value below.



Once done, reboot the machine and also the concern should be fixed then.

If problem still persists, attempt FIX 2 discussed below.

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FIX 2 – Via Data Explorer (Added 7 Jul, 2019, Referenced From Comments)

1. Open Documents Explorer.

2. Assuming Windows is set up on C: drive, go to C:ProgramDataMicrosoftEvent ViewerViews.

3. Right click View_XX.xml file (XX might be some number) tbelow and also delete it.


Checkout this video to highlight this fix:

Hope this helps!

Related: MMC might not produce the snap-in. The snap-in could not have been installed correctly.

About Kapil Arya

Kapil is presently a Microsoft MVP in Windows IT Pro specialization. He is Windows Insider MVP also, and also author of "Windows Group Policy Troubleshooting" book. In 2015, Microsoft India accomplished him as "Windows 10 Champion". Being passionate Windows blogger, he loves to help others on resolving their system problems. You have the right to follow him for news/updays and also fixes for Windows.



arthur brogard

2 years ago

I am trying to unpack cortana because I have actually problem in that area so I’m trying to simplify and acquire out what I can.

But as soon as I run MMC I obtain the error ‘MMC has detected an error in the snapin….’

I tried this settle. It hasn’t worked.

Can I get some other suggestions possibly, hopecompletely ? :)

Ravi Singh

2 years ago

Hi,we are gaining same concern in Event Viewers mmc has actually detected and error in a snap in and will certainly unpack it in Windows Server in window server 2012 .Can we use very same solution for window Server 2012

Kapil Arya

2 years ago

^^ Yes, you can.


2 years ago

no success …. server 2008 r2


2 years ago

no success…Windows 10 X64 (1903)


2 years ago

I just rerelocated all View_XX.xml documents at C:ProgramDataMicrosoftEvent ViewerViews on my WS 2008 R2 and also it resolved the concern.

See more: " The System Watchdog Timer Was Triggered A System Reset"X2 : Techsupport


2 years ago

Now fixed in this update:

Kapil Arya

2 years ago

^^ Thanks for adding this!


2 years ago

Andre’s solution operated for me!! Thank you!!!

Kapil Arya

2 years ago

^^ Glad it helped!


2 years ago

Andre you are the best a pure expert !!!I searched desperately the solution on all forums on the net for hrs and hrs and all the ones that sites and also forums provided, none worked ! thanks aacquire for your help Andre ! ;)

Kapil Arya

2 years ago

^^ Thanks debstarz for confirming the solution!

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