D2R not responding

Uninstalling AV isn’t meant to be the solution. It is meant to diagnose the source of the issue. If updating/adding exceptions doesn’t work, then temporarily uninstalling is a troubleshooting step to try to see if it changes the issue.

We have no say in how Bit Defender or any AV software interacts with our games/services. If you find an issue that occurs in relation to any program not provided by Blizzard (IE our Desktop Application and game clients) Then there are 2 things you should do.

First report the issue as a bug in the Blizzard bug report forum for the affected game/app. That will allow our QA teams to look into this further to see if we have anything we can do on our end to affect the issue.

Second, reach out to the makers of the 3rd party program to see if they are aware of the issue, if they have any solutions/work arounds for you or if it also needs to be reported to them via their own bug report process.

Now for anyone that hasn’t found a specific program to be the source of interference with the game. You can try the following:

First make sure you have all Windows updates. Manually check. If you find any. Install them, restart the system and recheck. Repeat until is says there are no more updates.

Then make sure your drivers are up to date. GPU, Audio, Network. Motherboard. Check from the hardware makers first, then as needed your system builder if this was a prebuilt.

Try running your system in selective startup mode: https://battle.net/support/article/200483

Create a new administrator account: Blizzard Support - Creating a New Administrator Account

Once the account is created, shut down the computer, wait 60 seconds, restart, log into the new profile and try the app/client.

It’s not 100% going to catch every potential software conflict (especially for those that launch as a service) but it can help rule out a lot of misconfigured application or running applications that may be conflicting with the game.

If that doesn’t help then the next best step is to submit a ticket with your system files so one of our tech agents can dig through and see if they can find the cause. Click your name at the top right of this page, click support, then contact support.