Is it a Virus?
✔ NO - Safe
Must be in Program Files\Tresorit\tresorit.exe or Program Files (x86)\Tresorit\tresorit.exe
Warning
Multiple processes may run
Each sync task, UI, and background service can spawn separate tresorit.exe instances
Can I Disable?
✔ YES
Close Tresorit when not syncing or disable startup via Task Manager
What is tresorit.exe?
tresorit.exe is the Windows client executable for Tresorit, a secure cloud storage platform that encrypts files locally before upload. The executable starts the UI, sync engine, and background services for encrypted file synchronization.
tresorit.exe runs with a multi-process architecture—UI, syncing, and background tasks run separately to improve reliability. It uses TLS for transfers and stores encryption keys in a protected local vault.
Quick Fact: Tresorit emphasizes end-to-end encryption so data stays protected from device to cloud.
Types of Tresorit Processes
- UI Process: User interface and status indicators
- Sync Engine Process: Handles file watching, encryption, and transfer
- Background Service: Runs tasks like offline caches and periodic checks
- Notification/Tray: Keeps system tray updates and alerts
- Watcher/Scanner: Monitors local folders selected for sync
- Encryption Module: Performs local encryption and key management
Is tresorit.exe Safe?
Yes, tresorit.exe is safe when it's the legitimate file from Tresorit downloaded from official sources (tresorit.com or official installer).
Is tresorit.exe a Virus or Malware?
The real tresorit.exe is NOT a virus. Malware may masquerade with similar names; always verify location and signature.
How to Tell if tresorit.exe is Legitimate or Malware
- File Location: Must be in
C:\Program Files\Tresorit\tresorit.exe or C:\Program Files (x86)\Tresorit\tresorit.exe. Any tresorit.exe elsewhere is suspicious.
- Digital Signature: Right-click the file in Explorer → Properties → Digital Signatures. Should show signer "Tresorit Ltd".
- Resource Usage: Normal usage ranges 2-15% CPU with occasional spikes during sync. Constant high usage after startup is suspicious.
- Behavior: Tresorit should run when you launch the app or allow background syncing; malware may start at boot without a UI.
Red Flags: If tresorit.exe is located in unusual folders (like AppData, Temp, or System32), running without user action, has no valid signature, or uses excessive resources constantly, scan with antivirus immediately.
Why Is tresorit.exe Running on My PC?
tresorit.exe runs to manage encrypted sync, startup checks, and background updates for the Tresorit cloud storage client.
Reasons it's running:
- Active Sync Operations: You have Tresorit syncing your local folders to the cloud; each folder adds processing thread and IO activity.
- Background Encryption and Indexing: Local encryption, file hashing, and index maintenance run in background processes to protect data.
- Startup and Tray Services: Tresorit can run on startup or stay resident in the system tray to monitor changes and notify you.
- File Change Monitoring: The watcher monitors selected folders for changes to trigger incremental uploads.
- Cross-Device Sync: Changes on one device propagate to others, causing additional concurrent processes during synchronization.
Can I Disable or Remove tresorit.exe?
Yes, you can disable tresorit.exe. You can stop syncing, exit the app, or uninstall Tresorit if you no longer need it.
How to Stop tresorit.exe
- Pause or Quit: In the Tresorit UI, use Pause Sync or Quit to close the application gracefully
- Exit Tray Icon: Right-click the system tray icon and choose Quit or Exit
- Disable Startup: Task Manager → Startup tab → Disable Tresorit
- Stop Background Tasks: In Settings → General → Background, disable background syncing
- Uninstall Tresorit: Windows Settings → Apps → Tresorit → Uninstall
How to Uninstall Tresorit
- ✔ Windows Settings → Apps → Apps & Features → Tresorit → Uninstall
- ✔ Control Panel → Programs → Uninstall a program → Tresorit → Uninstall
- ✔ After uninstall, remove remaining data from C:\Users\<YourUser>\AppData\Local\Tresorit or C:\Users\<YourUser>\AppData\Roaming\Tresorit if desired
Common Problems: High CPU or Memory Usage
If tresorit.exe is consuming excessive resources, try the following fixes.
Common Causes & Solutions
- Too Many Pending Sync Jobs: Pause sync for large folders and re-enable selective sync to reduce load
- Outdated Tresorit Client: Update to the latest version from tresorit.com/downloads
- Network Restrictions: Ensure TLS 1.2+ is enabled and firewall allows ports 443
- Antivirus Interference: Add Tresorit to exceptions or temporarily disable real-time scanning during troubleshooting
- Corrupted Local Cache: Clear local cache via Settings → Advanced → Storage → Clear Cache
- Conflicting Extensions: Disable or remove extensions that interact with file sync
Quick Fixes:
1. Open Tresorit UI and review Active Sync status
2. Pause all syncing, then selectively re-enable folders
3. Update Tresorit to the latest version
4. Check firewall and antivirus exceptions for tresorit.exe
5. Clear cache and restart Tresorit
Frequently Asked Questions
Is tresorit.exe a virus?
No, the legitimate tresorit.exe from Tresorit is not a virus. Verify it is located at C:\Program Files\Tresorit\tresorit.exe or C:\Program Files (x86)\Tresorit\tresorit.exe and that the digital signature shows Tresorit Ltd.
Why is tresorit.exe using so much CPU?
High CPU usually comes from active sync of many files, encryption tasks, or a misbehaving extension. Use the Tresorit UI to identify syncing folders and pause or adjust selective sync.
Can I delete tresorit.exe?
You can uninstall Tresorit via Windows Settings → Apps or Control Panel. Your local data will be removed unless you keep backups; you can reinstall later from tresorit.com/downloads.
Can I disable tresorit.exe at startup?
Yes. Use Task Manager → Startup to disable Tresorit from launching at boot. You can also disable background syncing in Settings → General → Background.
Why do I see many tresorit.exe processes?
Tresorit uses a multi-process architecture for reliability: a UI process, a sync engine, and background tasks. You may see multiple tresorit.exe entries related to different folders.
How secure is Tresorit' encryption?
Tresorit uses end-to-end encryption with client-side keys, TLS for transfers, and zero-knowledge-like design. Your data remains encrypted on-device before it leaves your machine.