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Solved

Kaspersky Mail Checker cannot be loaded

  • 13 November 2020
  • 22 replies
  • 4282 views
L
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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 
 

icon

Best answer by Igor Kurzin 13 November 2020, 06:28

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

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22 replies

Igor Kurzin
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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

Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
L
Rank

That worked!

Thanks so much Igor. What amazing prompt support!.

Igor Kurzin
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Glad it helped, you are most welcome :) 

 

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R

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

Did it answer your question? Please mark it as "Best Answer"! || Этот совет решил ваш вопрос? Пометьте его как "Best Answer"!
R

Thanks Andrew for the reply

 

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

2 Attachments
Flood and Flood's wife
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Kaspersky Total Security

Hello @RDOIII, 

Thank you for the information:ok_hand_tone3:

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:pray_tone3:

Flood:whale: +:whale2:

Edgar's Mission: "If we could live happy and healthy lives without harming others... why wouldn't we?" --- "One should examine oneself for a very long time before thinking of condemning others" Moliere --- Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
R

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

1 Attachment
andrew75
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@RDOIII, the Command Prompt must be run as administrator.

Did it answer your question? Please mark it as "Best Answer"! || Этот совет решил ваш вопрос? Пометьте его как "Best Answer"!
Flood and Flood's wife
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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:ok_hand_tone3:

  • Was the command prompt run with Administrative privileges? 

Please let us know?

Thank you:pray_tone3:

Flood:whale: +:whale2:

Edgar's Mission: "If we could live happy and healthy lives without harming others... why wouldn't we?" --- "One should examine oneself for a very long time before thinking of condemning others" Moliere --- Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
W
Rank

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.

R

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

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

Forum Moderator France & BeNeLux - Did it answer your question? Please mark it as "Best Answer” | Est-ce la réponse à votre question? Marquez-le comme résolu | Is dit het antwoord op uw vraag? Markeer het als opgelost | Errare humanum est.
Flood and Flood's wife
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@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:pray_tone3:

Flood:whale: +:whale2:

Edgar's Mission: "If we could live happy and healthy lives without harming others... why wouldn't we?" --- "One should examine oneself for a very long time before thinking of condemning others" Moliere --- Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
R

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
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Userlevel 7
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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:relaxed: !

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:cartwheel_tone3:

Cheers,

Flood:whale: +:whale2:

Edgar's Mission: "If we could live happy and healthy lives without harming others... why wouldn't we?" --- "One should examine oneself for a very long time before thinking of condemning others" Moliere --- Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
Z

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

Flood and Flood's wife
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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:pray_tone3:

Flood:whale: +:whale2:

Edgar's Mission: "If we could live happy and healthy lives without harming others... why wouldn't we?" --- "One should examine oneself for a very long time before thinking of condemning others" Moliere --- Did a reply answer your question? Please mark it as Best answer, the Topic status will change to Solved, thank you!
G 
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
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@Gabriel80 Welcome

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

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G

@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
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@Gabriel80

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

 

Forum Moderator France & BeNeLux - Did it answer your question? Please mark it as "Best Answer” | Est-ce la réponse à votre question? Marquez-le comme résolu | Is dit het antwoord op uw vraag? Markeer het als opgelost | Errare humanum est.
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