On Aug 14th 11 PM ET/Aug 15th 03:00 UTC, due to scheduled Firefox Account server maintenance, users may not be able to sign in or create a new subscription. This is expected to last approximately 30 minutes. Status updates can be found at https://status.vpn.mozilla.org or https://status.relay.firefox.com.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

how to fix mozilla vpn crash?

  • 1 reply
  • 1 has this problem
  • 141 views
  • Last reply by Eve

more options

How do you get the Mozilla Vpn to work on windows 10. Each time I start it it leaves the following logs in the windows event viewer.

The UI never shows itself.

And can anyone find out how to phone someone, this is a paid product so I'd assume there is a way but gien that the UI won't show I can't figure it out.

Have tried uninstalling and reinstalling, have tried rebooting.

Faulting application name: MozillaVPN.exe, version: 1.1.0.0, time stamp: 0xfcc474ac Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x00007ff8118b237f Faulting process id: 0x1094 Faulting application start time: 0x01d670fc4f24a6f3 Faulting application path: C:\Program Files\Mozilla\Mozilla VPN\MozillaVPN.exe Faulting module path: unknown Report Id: b5d8ef2a-defd-402a-8c9a-814d982fb00f Faulting package full name: Faulting package-relative application ID:

Application: MozillaVPN.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException

  at FirefoxPrivateNetwork.FxA.Account..ctor()
  at FirefoxPrivateNetwork.Manager.Initialize()
  at FirefoxPrivateNetwork.Entry+<>c__DisplayClass1_0.<Main>b__0()
  at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
  at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
  at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
  at System.Threading.ThreadHelper.ThreadStart()
How do you get the Mozilla Vpn to work on windows 10. Each time I start it it leaves the following logs in the windows event viewer. The UI never shows itself. And can anyone find out how to phone someone, this is a paid product so I'd assume there is a way but gien that the UI won't show I can't figure it out. Have tried uninstalling and reinstalling, have tried rebooting. Faulting application name: MozillaVPN.exe, version: 1.1.0.0, time stamp: 0xfcc474ac Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x00007ff8118b237f Faulting process id: 0x1094 Faulting application start time: 0x01d670fc4f24a6f3 Faulting application path: C:\Program Files\Mozilla\Mozilla VPN\MozillaVPN.exe Faulting module path: unknown Report Id: b5d8ef2a-defd-402a-8c9a-814d982fb00f Faulting package full name: Faulting package-relative application ID: Application: MozillaVPN.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException at FirefoxPrivateNetwork.FxA.Account..ctor() at FirefoxPrivateNetwork.Manager.Initialize() at FirefoxPrivateNetwork.Entry+<>c__DisplayClass1_0.<Main>b__0() at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Threading.ThreadHelper.ThreadStart()

All Replies (1)

more options

Try this to reset the VPN:


1.) Before doing the following, double check the task manager (you can search for this or press control+alt+delete to bring it up) to ensure that the VPN is not currently open. If it is open, right click the process in the task manager and select "End task"


2.) Uninstall Mozilla VPN from your device.


3.) Now, open the Windows "File Explorer". Click on the "View" tab at the top of the window. On the far right side of the option near the top of this tab, you should see a box called "Hidden Items". Ensure you have checked the box so you can view hidden files and folders.


4.) Now that you can view hidden items, click on "This PC" on the left side of the File Explorer. Now click on your hard drive (This should be labeled "Windows (C:)" and will be towards the bottom of the window. From here, open the Users folder and open the folder for your user. Now find and open the AppData folder, open "Local", and open "Mozilla".


5.) Inside the Mozilla folder, you should now see a folder for Firefox (if you have the Firefox Browser installed) and another for FirefoxPrivateNetworkVPN or Mozilla VPN. Right click on the FirefoxPrivateNetworkVPN folder and choose the delete option. Ensure that you do not delete the "Firefox" folder. Restart your system.


6.) Now, re-install the VPN from vpn.mozilla.org and attempt to open it and connect.