Quick Answer
razer-synapse3.exe is safe. It's the core of Razer Synapse 3, handling device detection, lighting profiles, macros, and cloud-synced settings for supported peripherals.
Is it a Virus?
✔ NO - Safe
Must be located in C:\Program Files (x86)\Razer\Synapse3 or C:\Program Files\Razer\Synapse3
Can I Disable?
⚠ Disabling will disable per-device lighting, macros, and profile management until you re-enable the process
Disabling razer-synapse3.exe will stop lighting control, macros, and device customization until re-enabled
Disable at Startup?
✔ YES
If you disable Startup, Synapse won't manage devices on boot and lighting may not apply automatically
What is razer-synapse3.exe?
razer-synapse3.exe is the core executable for Razer Synapse 3 software. It initializes the peripheral suite, loads per-device lighting profiles, macros, and key-mapping configurations across supported Razers. It orchestrates device discovery, profile syncing, and real-time lighting control.
This executable coordinates device enumeration, loads user profiles, communicates with USB drivers for lighting effects, and runs background services to apply settings across connected razer hardware.
Quick Fact: Razer Synapse 3 uses a modular architecture with multiple background services to manage lighting, macros, and cloud-backed profiles.
Types of Razers Synapse Processes
- Main UI Process: Razer Synapse 3 main window and user interface; handles profile selection and device grouping
- Driver Communication Process: Bridges razer-synapse3.exe with USB drivers for lighting and macro execution
- Lighting Engine Process: Executes per-device lighting updates in real time, including per-profile effects
- Profile Manager Process: Loads and applies user profiles, saves changes to local storage and cloud sync
- Cloud Sync Service: Synchronizes settings and licensing with Razer cloud services when connected
- Background Task: Keeps updater checks, hotkey routing, and non-UI tasks alive
Is razer-synapse3.exe Safe?
Yes, razer-synapse3.exe is safe when installed from official sources (razer.com, Microsoft Store) or bundled with hardware; it is digitally signed by Razer Inc.
Is razer-synapse3.exe a Virus or Malware?
The real razer-synapse3.exe is NOT a virus. However, malware developers sometimes imitate legitimate names. Always verify the file location and signature.
How to Tell if razer-synapse3.exe is Legitimate or Malware
- File Location:: Must be in
C:\Program Files (x86)\Razer\Synapse3\razer-synapse3.exe or C:\Program Files\Razer\Synapse3\razer-synapse3.exe. Any razer-synapse3.exe elsewhere is suspicious.
- Digital Signature:: Right-click the file in Explorer -> Properties -> Digital Signatures. Should show a signature from "Razer Inc." or related certified vendor.
- Version Information:: Open Properties -> Details; ensure Product Name shows "Razer Synapse" and Company is "Razer Inc."
- Resource Usage:: During idle state, CPU should be low; spikes indicate background activity or potential tampering.
Red Flags: If razer-synapse3.exe is located in unusual folders (like Temp, AppData\Roaming, or System32), runs when Razers Synapse is not open, has no digital signature, or uses excessive resources constantly, scan your system with antivirus software. Beware of similarly-named files such as "razer-synapse3.exe" from untrusted sources.
Why Is razer-synapse3.exe Running on My PC?
razer-synapse3.exe runs when Razer Synapse 3 is active or configured to run in the background to manage per-device lighting, macros, profiles, and cloud-synced settings.
Reasons it's running:
- Active Synapse Use: You're using Razers Synapse 3; the software loads profiles, lighting, and macros for connected devices.
- Background Lighting/Profiles: Per-device lighting effects and macro profiles may be applied or updated in the background.
- Startup Auto-Launch: Synapse 3 is configured to start with Windows, launching razer-synapse3.exe at login.
- Cloud Sync and Licensing: The software authenticates with your Razers account and syncs profiles across devices.
- Device Detection: New or reconnected Razers trigger device enumeration and initialization in razer-synapse3.exe.
Can I Disable or Remove razer-synapse3.exe?
Yes, you can disable razer-synapse3.exe. It will stop lighting control and profile management until re-enabled. You may also uninstall Synapse 3 if you prefer another solution for your Razers.
How to Stop razer-synapse3.exe
- End Individual Tasks: Open Task Manager (Ctrl+Shift+Esc) -> Processes -> razer-synapse3.exe -> End Task
- Disable Startup: Task Manager -> Startup tab -> Right-click Razer Synapse 3 -> Disable
- Stop Background Apps: Razer Synapse Settings -> System -> Disable "Continue running background apps when Razer Synapse is closed"
- Close All Windows: Close all Synapse windows to ensure no background UI sessions keep running
- Uninstall If Desired: Windows Settings -> Apps -> Apps & Features -> Razer Synapse 3 -> Uninstall
How to Uninstall Razers Synapse 3
- ✔ Windows Settings → Apps → Apps & Features → Razer Synapse 3 → Uninstall
- ✔ Control Panel → Programs → Programs and Features → Razer Synapse 3 → Uninstall
- ✔ If you still need device customization, consider alternative software for periphery control or keep Synapse temporarily disabled
Common Problems: High CPU or Memory Usage
If razer-synapse3.exe is consuming excessive resources or behaving unexpectedly, try targeted fixes to restore stability.
Common Causes & Solutions
- Many devices or complex lighting profiles: Limit to essential devices; simplify lighting profiles or disable dynamic effects
- Outdated software: Update to the latest Razers Synapse 3 to fix performance regressions
- Conflicting extensions or macros: Review and disable conflicting macros or third-party add-ons within Synapse
- Corrupted local profiles: Reset or recreate profiles; back up before pruning
- Driver or USB conflicts: Update USB drivers; re-seat devices and test with one device at a time
- Background services stuck: Restart the Razer Synapse services or reboot the PC to reinitialize processes
Quick Fixes:
1. Open Razer Synapse Task Manager (within the app) and identify high-usage devices or macros
2. Update Razers Synapse 3 to the latest version from razer.com/downloads
3. Disable unnecessary peripherals or experimental lighting schemes
4. Clear local profiles and reapply from a known-good backup
5. If issues persist, reinstall Razers Synapse 3
Frequently Asked Questions
Is razer-synapse3.exe a virus?
No. The legitimate razer-synapse3.exe is part of the official Razer Synapse 3 software and should be located in the Razer installation folder with a valid digital signature.
Why does razer-synapse3.exe use CPU even when I’m not using Razers devices?
Background lighting profiles, cloud sync, and macro listening can run even when idle. Use Synapse settings to limit background activities or disable startup if not needed.
Can I uninstall Razers Synapse 3?
Yes. You can uninstall Razers Synapse 3 from Windows Settings → Apps & Features. Note that you may lose per-device lighting profiles and macros.
Can I disable razer-synapse3.exe without removing Razers hardware?
Yes, you can disable its startup and background tasks. This stops lighting and macros but keeps the software available for manual re-enabling when needed.
Why does Razers Synapse 3 start with Windows?
Synapse 3 is often configured to start automatically to ensure lighting and macros are ready when you log in. You can disable this in the Startup settings.
How can I reduce Razers Synapse 3 memory usage?
Limit active devices, simplify lighting effects, disable cloud sync when not needed, and consider reinstalling a clean copy of Razers Synapse 3.