Deathadder v2 pro side mouse buttons and sensitivity not working | Razer Insider
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The mouse has been working untill a couple of days ago when the mouse buttons 4 and 5 stopped working, I’ve tried rebinding them reinstalling synapse nothing has worked so far. If you have a fix please let me know. Thanks 

Did you already try the steps here for further isolation? If that didn’t help, PM me the serial number so I can validate its model and check for other model-specific workarounds to help you address the issue. Thank you!


The mouse has been working untill a couple of days ago when the mouse buttons 4 and 5 stopped working, I’ve tried rebinding them reinstalling synapse nothing has worked so far. If you have a fix please let me know. Thanks 

Hey bud so did anything help out? I’m having the same issue and its only been 9-11 months and I dont use it heavily. 


did anything help ? i have tried everything, nothing seems to work


Hey fellow nerds, I may have your fix. 
Surprisingly simple, I know, but I just had the same issue and lost my mind.

Before doing this, I tried: 

  • Uninstalling and reinstalling both Synapse and Cortex
  • Turning off and on the mouse
  • Keyboard duster under the two buttons
  • Repair tool for Synapse

What ended up working was plugging it into the device that I was using. 

This instantly fixed it for me. 

 

Hopefully this is your fix! Best of luck peeps!


Hey fellow nerds, I may have your fix. 
Surprisingly simple, I know, but I just had the same issue and lost my mind.

Before doing this, I tried: 

  • Uninstalling and reinstalling both Synapse and Cortex
  • Turning off and on the mouse
  • Keyboard duster under the two buttons
  • Repair tool for Synapse

What ended up working was plugging it into the device that I was using. 

This instantly fixed it for me. 

 

Hopefully this is your fix! Best of luck peeps!

What does this mean?


this happened to me too, but only thing that fixed it was just hitting the mouse against my hand fairly hard.

I had lost the use of the forward button on the side of the mouse, and the DPI up button on the top, but hitting the mouse allows it to work for a while before it stops again, until it’s hit. 


Like some ancient device. It doesn’t seem to be a software issue. Plugging it in does not make any difference, and I’ve uninstalled and re-installed Synapse multiple times.


this happened to me too, but only thing that fixed it was just hitting the mouse against my hand fairly hard.

I had lost the use of the forward button on the side of the mouse, and the DPI up button on the top, but hitting the mouse allows it to work for a while before it stops again, until it’s hit. 


Like some ancient device. It doesn’t seem to be a software issue. Plugging it in does not make any difference, and I’ve uninstalled and re-installed Synapse multiple times.

the only thing that worked, thanks


im having the same problem, but with the up sensitivity button and the scroll wheel. I tried updating synapse and the mouse, using it wired, just about everything, but its still not working. ive been having this problem for about a year now and ive just learned to live with it by reassigning the actions to different buttons. For example, since my up sensitivity doesnt work, i reassigned my down sens button to cycle through sensitivity stages rather than just go down. Razer Hypershift also helps. I use Hypershift to scroll by assigning my scroll wheel button to Hypershift and my side buttons as scrolling up and down. Hope this helps


this happened to me too, but only thing that fixed it was just hitting the mouse against my hand fairly hard.

 

Slapping my mouse in the palm of my hand worked for me… Looks like I need to get a new mouse


this happened to me too, but only thing that fixed it was just hitting the mouse against my hand fairly hard.

I had lost the use of the forward button on the side of the mouse, and the DPI up button on the top, but hitting the mouse allows it to work for a while before it stops again, until it’s hit. 


Like some ancient device. It doesn’t seem to be a software issue. Plugging it in does not make any difference, and I’ve uninstalled and re-installed Synapse multiple times.

I am posting now in July of 2024 just to comment that this unironically worked. I’ve had this issue before and also tried reinstalling and updating everything I could think of. Yet a good ol’ smack into the palm of my hand and it’s working good as new. Appreciate you bro.


I had to log in to say the same thing. My sensitivity down button stopped working out of the blue (to be fair, I've had this mouse for years by this point) and while searching for answers I came by this thread. And my guy, slapping it against my palm returned the button's functionality. Thanks for the help.


this happened to me too, but only thing that fixed it was just hitting the mouse against my hand fairly hard.

I had lost the use of the forward button on the side of the mouse, and the DPI up button on the top, but hitting the mouse allows it to work for a while before it stops again, until it’s hit. 


Like some ancient device. It doesn’t seem to be a software issue. Plugging it in does not make any difference, and I’ve uninstalled and re-installed Synapse multiple times.

this surprisingly worked 


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