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Viper 8k side buttons

  • May 6, 2026
  • 1 reply
  • 4 views

After updating my mouse to the latest firmware, the side buttons (mb 4 & mb 5) have stopped working on the left hand side of my mouse. The only fix I can find for this is to swap the mouse into left handed mode which has now permanently swapped my left and right click over and has for some reason disabled the backspace button on my Razer keybaord and cannot be fixed through Synapse.

 

1 Reply

Razer.Zionzedd

Hi Pr_Pythons,

 

This issue is often caused by a software glitch in Razer Synapse following a firmware update, which can reset button assignments or cause conflicts with the new driver. Allow me to help you further.  PM me your Razer Viper 8KHz SN: (Follow steps here: https://mysupport.razer.com/app/answers/detail/a_id/548/~/how-to-find-the-serial%2C-product%2C-or-part-number-on-a-razer-device) and link of your receipt in a PDF format: (Save the shareable files via any online drive account listed here: https://mysupport.razer.com/app/answers/detail/a_id/4011?_ga=2.197232171.544708261.1744067200-1885068520.1744067200&_gl=1*vo487o*_ga_3TRK53PM75*MTc0NDA2NzE5OS4xLjEuMTc0NDA2NzM0My4yNC4wLjA). Kindly change the privacy settings to "anyone has link", so I can view the file/s without asking for permission. 

 

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