Cannot access internet despite UI showing successful connection

[jamesWalker55]

Is it a bug?

• I know this is an issue with the app, and contacting Mullvad support is not relevant.

I have checked if others have reported this already

• I have checked the issue tracker to see if others have reported similar issues.

Current Behavior

On version 2025.2, when I connect to a server on Mullvad, the UI shows that it has connected successfully:

However, when I try to access any website, it fails to connect at all:

On version 2024.8, it connects successfully using the same settings, and I am able to visit websites as usual:

Through some experimentation, I notice that this only occurs when the VPN is using the UDP protocol. When I use "UDP-over-TCP" obfuscation, I can connect to the internet once again.

Expected Behavior

I should be able to access the internet.

Steps to Reproduce

1. Launch the Mullvad app
2. Ensure the "UDP-over-TCP" obfuscation is NOT used (use any other UDP-based connection method)
3. Connect to any server
4. The connection succeeds on the Mullvad UI
5. Cannot connect to internet on any other app

Failure Logs

mullvad-report.log

Operating system version

Windows 10

Mullvad VPN app version

Broke in 2025.2, worked fine in 2024.8

Additional Information

No response

[AsserGoh]

Your isp, your firewall or your dns could be any of the above. Although obfuscation can bypass firewalls and avoid isp and web server detection so it probably has nothing to do with your dns. Nothing is for certain because no log is shown. If you are in a country or a state that has extremely high cyber survelliance or low tolerance for tunneling services that could be the reason. If so though i doubt it, you can learn by yourself on how to get around it, though again i doubt you will, so simple advice install the app the moment windows os is installed through shell command injection from a usb, meaning attempt to install something before a block can be attempted unless it is already on your hardware then i cannot verbally help you here.