clion-sync.exe

What is clion-sync.exe?

clion-sync.exe is the synchronization daemon for JetBrains CLion. It keeps IDE settings, keymaps, plugins, and preferences in sync across devices by communicating with JetBrains accounts and local storage.

The service runs as a background process, uses HTTPS to talk to JetBrains servers, and stores a local cache of user settings. It resolves conflicts based on timestamp and user choices to maintain a consistent CLion environment.

Types of CLion Sync Processes

• Sync Listener: Monitors changes in CLion settings and plugin lists
• Token Refresh: Refreshes JetBrains account authentication tokens
• Settings Sync: Applies and saves settings across devices
• Plugin Sync: Synchronizes plugin data and enablement
• Cache Manager: Manages local cache for faster subsequent syncs
• Conflict Resolver: Presents and resolves sync conflicts

Is clion-sync.exe Safe?

Yes, clion-sync.exe is safe when it's the legitimate file from JetBrains downloaded from official sources (jetbrains.com or CLion installer).

Is clion-sync.exe a Virus or Malware?

The real clion-sync.exe is NOT a virus. Malware may imitate names; verify digital signature and location.

How to Tell if clion-sync.exe is Legitimate or Malware

1. File Location:: Must be in C:\Program Files\JetBrains\CLion 2025.1\bin\clion-sync.exe or a similarly dated subfolder. Any clion-sync.exe elsewhere is suspicious.
2. Digital Signature:: Right-click clion-sync.exe in Windows Explorer → Properties → Digital Signatures. Should show "JetBrains s.r.o."
3. Resource Usage:: Normal usage is 1-6% CPU and 40-120 MB RAM during sync. Unusually high or persistent usage is suspect.
4. Behavior:: Should run only when CLion is syncing or on startup. If it runs without CLion, investigate for malware.

Why Is clion-sync.exe Running on My PC?

clion-sync.exe runs to keep your CLion environment aligned across devices, whether you’re actively developing or preparing a project for collaboration.

Reasons it's running:

• Active CLion Session: You have CLion open; sync ensures your settings and plugins are current.
• Background Settings Sync: Settings and plugin changes are mirrored to JetBrains servers for other devices.
• JetBrains Account Sync: Your account token refreshes to maintain authentication for syncing.
• Cross-Device Collaboration: You work on multiple machines; clion-sync propagates changes.
• Periodic Health Check: CLion periodically performs health checks to ensure consistency and license validity.

Can I Disable or Remove clion-sync.exe?

Yes, you can disable clion-sync.exe. If you don't need cross-device syncing, you can disable it or uninstall CLion entirely.

How to Stop clion-sync.exe

• End Sync in CLion: Within CLion, sign out of JetBrains account or disable 'Settings Sync' under Settings/Preferences.
• Close CLion: Exit the IDE to stop background sync tasks.
• End Background Process: Open Task Manager, locate clion-sync.exe, and End Task.
• Disable Startup: In Task Manager → Startup, disable JetBrains CLion sync-related startup entry.
• Adjust Sync Settings: In CLion Settings → JetBrains Account → Sync, turn off automatic sync.

How to Uninstall CLion (and clion-sync)

• ✔ Windows Settings → Apps → Apps & Features → CLion → Uninstall
• ✔ Run JetBrains Toolbox (if used) to remove CLion cleanly
• ✔ Optionally remove remaining CLion config in %LOCALAPPDATA%\JetBrains\CLion and %USERPROFILE%\AppData\Roaming\JetBrains
• ✔ Reboot the computer after uninstall

Common Problems: Sync Issues or High Resource Use

If clion-sync.exe is behaving poorly or consuming resources:

Common Causes & Solutions

• Network or Proxy Issues: Check network connectivity and proxy settings; ensure TLS/SSL access to jetbrains.com.
• Large Plugin Set: Trim unnecessary plugins in CLion; disable or uninstall rarely used plugins.
• Conflicting Settings: Resolve conflicting settings by re-signing in and re-syncing preferences.
• Outdated CLion Version: Update CLion and clion-sync to latest version via JetBrains Toolbox or CLion update.
• Corrupt Local Cache: Clear clion-sync cache under %LOCALAPPDATA%\JetBrains\CLion\; re-run sync.
• Auth Token Expired: Sign out/in to refresh JetBrains account token used for sync.

Related Processes