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Malwarebytes 3.1.2 appears to be preventing the opening of internet browsers.

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Malwarebytes 3.1.2 appears to be preventing the opening of internet browsers. On 2 separate PC's, one old and one brand new, I have been experiencing an inability to open any web browser (Edge, IE and Chrome). Other programs open and appear to be operating fully. Both PC's are running the Windows 10 Pro Creators Update 1703 and also have Symantec Endpoint Protection 12.1.6 RU6 MP5 running. 

Attempting to troubleshoot the issue, I disabled the Malwarebytes service and restarted the PC. Upon restart, I was once again able to open web browsers. I attempted to restart the Malwarebytes service and the web browsers again stopped responding. I then attempted to disable Symantec while leaving Malwarebytes enabled and restarted the pc. Again, the web browsers didn't open. I then re-enabled Symantec and restarted the pc. Following this, I uninstalled Malwarebytes and restarted the computer. I checked to see if web browsers were working and they were. I then attempted to reinstall Malwarebytes. After installation, the web browsers stopped working again. I have now left the Malwarebytes service disabled to allow functionality on these two PCs. 

Does anyone know what's going on? If so, could someone inform me of a solution or if one is being worked on? 

I am also experiencing a glitch where the Web Protection and Malware Protection turn themselves off and won't turn back on. I have reviewed the 29-page May 19th thread regarding this issue and none of the known solutions have worked. Any guidance in this area would be appreciated?

Thank you.

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Hello and Welcome!

There is a known conflict with SEP & MB3

I would like you to add these files to your Anti-Virus exclusions list as mentioned in this FAQ HERE (my list below includes the exe files as well)

  • C:\Program Files\Malwarebytes\Anti-Malware\assistant.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\malwarebytes_assistant.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\mbam.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\MbamPt.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\MBAMService.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\mbamtray.exe
  • C:\Program Files\Malwarebytes\Anti-Malware\MBAMWsc.exe
  • C:\Windows\system32\Drivers\farflt.sys
  • C:\Windows\System32\drivers\mbae64.sys
  • C:\Windows\System32\drivers\mbam.sys
  • C:\Windows\System32\drivers\MBAMChameleon.sys
  • C:\Windows\System32\drivers\MBAMSwissArmy.sys
  • C:\Windows\System32\drivers\mwac.sys

Also please exclude the following folders too: (The complete folder)

  • C:\Program Files\Malwarebytes\Anti-Malware
  • C:\ProgramData\Malwarebytes\MBAMService

Once done reboot the computer several times (could be up to 4) until both are working correctly

If that does not work, there is another work around you can do...

  • Install both SEP and the latest MB 3.x
  • Reboot into the safe mode and turn off Self Protection within Malwarebytes.
  • Reboot into normal mode again and you should be able to use both SEP and MB 3.x side by side without issues.

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