Kaspersky Mail Checker cannot be loaded

[leemingd]

Just now when i start Outlook I get persistent error every time I click anything.

The Add-in “Kaspersky Mail Checker” (C:\Program Files(x86)\Kaspersky Lab\Kaspersky Internet Security 21.2\mcou.dll) cannot be loaded and has been disabled by Outlook.

I am using Outlook 2007 on Windows 10 64-bit build 18363.
Kaspersky 21.2.16.590 
 

[Igor Kurzin]

hi @leemingd , 

Try the following: 

run Command Prompt (Admin) (right click the Start button to find this option) and then execute the following commands: 

regsvr32 -u "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Internet Security 21.2\x64\mcou.dll"
regsvr32 "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Internet Security 21.2\x64\mcou.dll"
regsvr32 -u "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Internet Security 21.2\mcou.dll"
regsvr32 "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Internet Security 21.2\mcou.dll"

Restart PC.

How will it go after this? 

Regards,

Igor

[leemingd]

That worked!

Thanks so much Igor. What amazing prompt support!.

[Igor Kurzin]

Glad it helped, you are most welcome :) 

 

[RDOIII]

Hello

 

I am having the same issue.

 

I tried to run these commands but each one returned  “The module “repeat of entered command” failed to load.

And a comment that “The specified module could not be found”

 

I copied and pasted the complete command one at a time and hit oK  and then the error message occurred. 

Any idea what i did wrong?

 

Thank

 

RDOIII

[andrew75]

@RDOIII, most likely you have a different version of the antivirus installed.
Show a screenshot of the error.

[RDOIII]

Thanks Andrew for the reply

 

Here is screen shot of the message and my info on Kaspersky installed

[Flood and Flood's wife]

Kaspersky Total Security

Hello @RDOIII, 

Thank you for the information👌

Run Command Prompt (Admin) (right click the Start button to find this option) and then execute the following commands: 

regsvr32 -u "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Total Security 21.2\x64\mcou.dll"    
regsvr32 "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Total Security 21.2\x64\mcou.dll"
regsvr32 -u "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Total Security 21.2\mcou.dll"
regsvr32 "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Total Security 21.2\mcou.dll"

Restart PC.

Let us know the outcome please?

Thank you🙏

Flood🐳 +🐋

[RDOIII]

I tried the suggested codes but it returns the attached error message

[andrew75]

@RDOIII, the Command Prompt must be run as administrator.

[Flood and Flood's wife]

I tried the suggested codes but it returns the attached error message, call to DllRegisterServer failed with error code 0x80070005 

Hello @RDOIII, 

Thank you for the information👌

• Was the command prompt run with Administrative privileges? 

Please let us know?

Thank you🙏

Flood🐳 +🐋

[windowsWarr1or]

I have this same issue on Windows 7 pro. I have tried this solution but at each command prompt entry I was told the file was not found. Short of uninstalling and reinstalling (which seemed to work on my laptop) what is the resolution for this. Ty.

I do have two versions of the mcou.dll file. One is on the C: drive and is causing the error, and the other is on my E: backup drive. That backup copy is older and a smaller file. I tried to copy and paste but am told I cannot do so without system permission. I do not know how to do this from the command prompt (admin).

Thanks in advance.

[RDOIII]

I was able to run as administrator but the attached error was returned

[Berny]

@RDOIII This looks like a Tech Support issue , please wait for further advice from @Igor Kurzin 

[Flood and Flood's wife]

@RDOIII & @windowsWarr1or, 

1. Check if the issue exists with patch(b)? 
2. Note information in @aussiejoe666 topic: Kaspersky Mail Checker cannot be loaded after update 21.2.16.590(a), Kaspersky experts have acknowledged  a bug#

Thank you🙏

Flood🐳 +🐋

[RDOIII]

Hey Floods

 

Thanks so much for the heads up on the patch issues

I verified that I have the update with patch (b) and reactivated the Kaspersky Mail Check in Outlook and it is now working fine.

 

Appreciate the follow up

 

[Flood and Flood's wife]

Thanks so much for the heads up on the patch issues, I verified that I have the update with patch (b) and reactivated the Kaspersky Mail Check in Outlook and it is now working fine. Appreciate the follow up

Hello @RDOIII, 

You’re most welcome☺ !

Thank you for taking the time to let us know the Kaspersky Mail Checker cannot be loaded  issue, is resolved for you, with patch(b), we’re delighted with the outcome🤸

Cheers,

Flood🐳 +🐋

[Ziz]

Thanks a lot, but may I ask why it happened?

[Flood and Flood's wife]

Thanks a lot, but may I ask why it happened?

Hello @Ziz, 

Welcome! 

There was a Mail-av plugin failed to load bug, fixed by Patch B. 

Thank you🙏

Flood🐳 +🐋

[Gabriel80]

Hello. I uninstalled Kaspersky Anti-Virus and now this DLL error appears every time I open Outlook2007.The Kaspersky Anti-Virus has been uninstalled, so the command does not work because it cannot find the path:

regsvr32 -u "C:\Program Files (x86)\Kaspersky Lab\Kaspersky Total Security 21.2\x64\mcou.dll" 

 

How to fix this?  Tks

 

[Berny]

@Gabriel80 Welcome

Your screenshot is referring to path  “Kaspersky Lab\Kaspersky Anti-Virus 21.2\”

[Gabriel80]

@Gabriel80 Welcome

Your screenshot is referring to path  “Kaspersky Lab\Kaspersky Anti-Virus 21.2\”

Yes, I know it is another path. I changed the path and it doesn't work either

don't you know how to solve?

 

[Berny]

@Gabriel80

Please contact Kaspersky Technical Support  https://my.kaspersky.com/techsupport#/requests/new