Razer Synapse Desktop Application (latest version) — Windows keyboard input handler | Razer Insider
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Razer Synapse Desktop Application (latest version) — Windows keyboard input handler

  • April 21, 2026
  • 0 replies
  • 6 views

Dear Razer Support Team,

I am writing to report a reproducible software bug in Razer Synapse that has significantly impacted my daily workflow. I use Razer Synapse to manage the DPI and polling rate settings on my Razer DeathAdder V3, and I am currently running the latest version of the software.

Issue Summary:
Whenever Razer Synapse is running, the lowercase 'c' key on my keyboard stops functioning entirely — pressing it produces no output. However, pressing Shift + C correctly outputs an uppercase 'C'. The moment I terminate the Synapse process, the 'c' key immediately resumes normal operation.

Key Findings:
• The issue is 100% reproducible and directly tied to Razer Synapse being active.
• It took me approximately six months of troubleshooting to isolate Synapse as the root cause.
• No other application or background process triggers this behavior.
• The problem persists across reboots as long as Synapse is running.

I understand this may seem like an unusual bug, but I am completely confident in my findings after extensive testing. I am happy to provide a screen-recorded video demonstration to assist your engineering team in reproducing and diagnosing the issue.

Request:
I kindly ask that this matter be escalated to your technical or development team for a thorough investigation. I would appreciate any available troubleshooting steps, a targeted patch, or a timeline for a fix in an upcoming Synapse update.

Thank you for your time and attention. I look forward to a prompt and substantive response.

Best regards,
Darshan Chauhan
[removed by moderator]
India-Gujarat