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Windows updates have killed my Malwarebytes

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Not sure where this thread belongs, but Microsoft pushed out a dozen or so updates to their .Net & Security at around 3:20 last night. At 3:50, my MWB stopped running.

A Windows message box pops up --- "Malwarebytes Anti-Malware has stopped working"

I've had and religiously used MWB for years with no problem --- until this morning. Uninstalling/Re-installing MWB hasn't solved anything.

I contacted Microsoft, and it looks like the failures are related to - mbamcore.dll, as this is where Windows logged the failures.

Basics -

-Running Windows Vista x64

Updates pushed by Microsoft last night that might be causing conflict:

KB2585542 - Security Update for Vista x64

KB2632503 - Update for Win Vista x64

KB2631813 - Security Update for Vista x64

KB890830 - Windows Malicious Software Removal tool x64

KB2644615 - Security Update for Windows Vista x64

KB2598479 - Security Update for Windows Vista x64

KB2657424 - Security Update for .Net 3.5 SP1

KB2646524 - Security Update for Windows Vista x64

KB2656351 - Security Update for .Net 4

KB2584146 - Security Update for Windows Vista x64

KB2656362 - Security Update for .Net 2 SP2

Any help/advice would be appreciated.


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Hello bguy and welcome to the Malwarebytes forums!

I have sent you a batch file via PM.

Go ahead and download the attached file to your desktop. Once downloaded, right click the file and select Extract Here.

Then right click the extracted file named GRAB mbam 3 and select Run as Administrator(if you are using XP you can just double click). Once the batch file is finished running, it will create a folder named MBAM files. Right click this file and mouse over Send to and select Compressed. This will Zip the file and allow you to attach the file in your reply.

Make sure that you send the fiel back via PM. Do not post it here.

With this information I will be able to determine what the issue is and how to fix it.

**If you run into an issue where the file opens as a text document, then the file did not save correctly. Please go ahead and open up My Computer and open the C: drive. Then go to tools at the top of the page(if it is not there, then press the Alt button) and then folder options>view and then "uncheck" the "Hide extensions for known file types." Once you do that, go back out to the desktop and you will see that your file ends with .txt. Rename the file so the file reads Error Load Database.bat and then you should see the icon change. Now run the program as Admin and the problem should be fixed.

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  • 2 weeks later...

Hi There,

I too have Windows Vista Ultimate x64 with latest updates and have the same problem described in the first post.

Just wanted to know if any progress had been made on this issue.

The full error is below:

Problem signature:

Problem Event Name: APPCRASH

Application Name: mbam.exe

Application Version:

Application Timestamp: 4ef23d40

Fault Module Name: mbamcore.dll

Fault Module Version:

Fault Module Timestamp: 4eea37f7

Exception Code: c0000005

Exception Offset: 00060ae0

OS Version: 6.0.6002.

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pow183 and Timbiden,

Please go here and download the public beta of version to see if it addresses the issue. If you are still having the same issue after updating, please let me know so we can look into it further.

Hi Haleo,

Downloaded and installed the beta. The main application now starts without the above error.

Im running a full scan, will let you know if the application itself fails for any reason.

Many Thanks


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