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Unable to contact license server.

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I have been having trouble with Malwarebytes since this morning. It slowed my computer down to a crawl and is showing error messages such as:


Unable to contact license server. Check your network settings or contact your system administrator for help.

Unable to contact update server.


I don't know what to do to fix this. I would appreciate some help.

Thank you.

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  • Staff

***This is an automated reply***


Thanks for posting in the Malwarebytes 3 Help forum.


If you are having technical issues with our Windows product, please do the following: 


If you haven’t already done so, please run the Malwarebytes Support Tool and then attach the logs in your next reply:

NOTE: The tools and the information obtained is safe and not harmful to your privacy or your computer, please allow the programs to run if blocked by your system.

  1. Download Malwarebytes Support Tool
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  3. Double-click mb-support-X.X.X.XXXX.exe to run the program
    • You may be prompted by User Account Control (UAC) to allow changes to be made to your computer. Click Yes to consent.
  4. Place a checkmark next to Accept License Agreement and click Next
  5. You will be presented with a page stating, "Get Started!"
  6. Click the Advanced tab
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  7. Click the Gather Logs button
  8. A progress bar will appear and the program will proceed with getting logs from your computer
    Advanced Gather Logs_arrows.png
  9. Upon completion, click a file named mbst-grab-results.zip will be saved to your Desktop. Click OK
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Click "Reveal Hidden Contents" below for details on how to attach a file:


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One of our experts will be able to assist you shortly.


If you are having licensing issues, please do the following: 


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Please contact our support team at https://support.malwarebytes.com/community/consumer/pages/contact-us to get help

If you need help looking up your license details, please head here: https://support.malwarebytes.com/docs/DOC-1264 


Thanks in advance for your patience.

-The Malwarebytes Forum Team

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Quick update. I thought a uninstall/reinstall might do the trick so I downloaded the Malwarebytes cleaner program here and ran the program.

After the install and a computer reset, I took a look at the log file the program created. There were a lot of errors. The log file is attached. Sadly even after the clean reinstall, I have the same errors.

Thanks again!


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Hello @EricLLLL:

Re: MBAM404101 error.

Thank you for that above valuable .png   If your Malwarebytes License Key has unquestionable validity such as having been purchased through the Malwarebytes partner - Cleverbridge, and if the license was successfully used to activate Malwarebytes 3 for Windows in the past, a last check could be made regarding entry accuracy, the presence of a dash between the five character groupings, absence of space characters before, within or after the key.  This is where the value of a Windows copy & paste is useful.

If the above checks okay, please go to post #2, in this thread, and just beneath licensing issues, select the hidden text field and follow the instructions within.  Additionally, consider checking on the status of your license through the My Account server using your forum registration email/password.

Reference: Unable to activate Malwarebytes Premium license key on Windows device

Please let the forum know what you find.


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I just checked my account. The license is active and is set to be renewed in 7 days. It also has the dash between each of the five character groupings. There are no spaces in the key and I tried to copy and paste it, both directly from the account and from the text file created yesterday by the Malwarebytes cleaner program.

I reran the Malwarebytes Support Tool and the new log zip file is attached. 

Thank you for your help.


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Winsock: Catalog5 01 C:\WINDOWS\SysWOW64\PrxerNsp.dll [87024 2018-08-15] ()
Winsock: Catalog9 02 C:\WINDOWS\SysWOW64\PrxerDrv.dll [98800 2018-08-15] (Initex)
Winsock: Catalog9 03 C:\WINDOWS\SysWOW64\PrxerDrv.dll [98800 2018-08-15] (Initex)
Winsock: Catalog9 04 C:\WINDOWS\SysWOW64\PrxerDrv.dll [98800 2018-08-15] (Initex)
Winsock: Catalog9 05 C:\WINDOWS\SysWOW64\PrxerDrv.dll [98800 2018-08-15] (Initex)
Winsock: Catalog9 18 C:\WINDOWS\SysWOW64\PrxerDrv.dll [98800 2018-08-15] (Initex)
Winsock: Catalog5-x64 01 C:\Windows\system32\PrxerNsp.dll [101872 2018-08-15] ()
Winsock: Catalog9-x64 02 C:\Windows\system32\PrxerDrv.dll [119792 2018-08-15] (Initex)
Winsock: Catalog9-x64 03 C:\Windows\system32\PrxerDrv.dll [119792 2018-08-15] (Initex)
Winsock: Catalog9-x64 04 C:\Windows\system32\PrxerDrv.dll [119792 2018-08-15] (Initex)
Winsock: Catalog9-x64 05 C:\Windows\system32\PrxerDrv.dll [119792 2018-08-15] (Initex)
Winsock: Catalog9-x64 18 C:\Windows\system32\PrxerDrv.dll [119792 2018-08-15] (Initex)

Did Proxifier uninstall correctly? The DLL files are still inserted in the Winsock.

  • Please open an elevated Command Prompt (Windows search bar -> type cmd -> right-click Command Prompt and click Run as administrator).
  • Enter the following text:
netsh winsock reset
  • Press Enter on your keyboard.
  • Reboot the computer and try to activate Malwarebytes again.
Edited by LiquidTension
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