How to fix Razer Deathadder essential firmware doesn't recognize device

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The Razer Deathadder mouse is quite an appreciated device for all your gaming mouse needs. But clearly, you need to use Razer Synapse to configure it, and what if something goes wrong? So what if Razer Deathadder essential firmware doesn't recognize your device?

Synapse has been having a few issues in other cases too, such as not detecting mouse and not opening at all.

But if you are not able to configure your Deathadder then it is a problem, so let's look at how to fix it.

How to fix Razer Deathadder essential firmware doesn't recognize device

While the release of Synapse 3 seems to have solved some of the issues, there doesn't seem to be one fix that might be good for all cases. Still, there is definitely several things that you might want to check.

Uninstall Synapse and reinstall it

If your mouse works when it's plugged in, then reinstalling Synapse should probably be the first thing to do. Cleaning up the register of all entries related to Razer and also deleting the folder that are left inside "C:\Program Files\" should also be a good idea.

Be sure to create a Windows restore point before doing all the previous steps, in case something goes wrong.

Uninstall and reinstall the Razer device

Just in case Windows is not configuring your device correctly, you might want to do it manually. Here's how to do it:

  • Go to the Device Manager;
  • Right-click on the Deathadder device;
  • Click on Uninstall device;
  • Unplug your mouse and reboot your PC;
  • Reconnect the mouse and restart Synapse.

Hopefully that should help you solve the issues with Synapse.

Finally, Razer support has confirmed that there is a compatibility problem between their software and Valorant plus Riot Vanguard. Uninstalling both Valorant and Riot Vanguard, in case you have them installed, should solve the device being failed to be recognized.

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