Is it a Virus?
✔ NO - Safe
Must be located in C:\Program Files\Box\Box Sync\BoxSync.exe or C:\Program Files (x86)\Box\Box Sync\BoxSync.exe
Warning
Moderate to High sync activity
Box Sync creates background file watchers and network transfers; excessive CPU can occur during large sync batches
Can I Disable?
✔ YES
You can pause syncing or quit the app; to stop startup, disable the startup item or sign out from Box
What is BoxSync.exe?
BoxSync.exe is the Box Sync client executable that keeps a local set of Box folders synchronized with your Box cloud account. It runs in the background, monitoring changes in designated folders and performing uploads and downloads to maintain parity with Box.
Box Sync uses a lightweight daemon alongside a UI component to manage file watching and transfers. It communicates with Box servers over HTTPS, maintains a local index, and handles conflict resolution when simultaneous edits occur.
Quick Fact: Box Sync creates a dedicated local folder that mirrors selected Box folders, enabling offline access and automatic sync when connectivity returns.
Types of Box Sync Components
- Background Sync Service: Watches for file changes and coordinates uploads/downloads
- UI/Tray Helper: Provides the tray icon and user controls for pause/resume and settings
- Local Cache: Stores a temporary copy of files for quick access during sync
- Network Transfer Module: Handles file transfer over HTTPS to Box data centers
Is box-sync.exe Safe?
Yes, box-sync.exe is safe when it's the legitimate file from Box, downloaded from box.com or installed by a reputable vendor.
Is box-sync.exe a Virus or Malware?
The real box-sync.exe is NOT a virus. Malware may imitate names, so verify location and signature.
How to Tell if box-sync.exe is Legitimate or Malware
- File Location:: Must be in
C:\Program Files\Box\Box Sync\BoxSync.exe or C:\Program Files (x86)\Box\Box Sync\BoxSync.exe. Any other path is suspicious.
- Digital Signature:: Right-click the executable (BoxSync.exe) → Properties → Digital Signatures. Should show a signatory such as "Box, Inc.".
- Resource Usage:: Normal usage is 0-15% CPU and 50-250 MB memory while idle. Constant high usage or spikes when idle is suspicious.
- Behavior:: Box Sync should run primarily in response to file changes or user actions. Persistent background endpoints with no UI could indicate tampering.
Red Flags: If box-sync.exe is located outside Box directories (e.g., in Temp, AppData\Roaming), runs when the system starts without user action, lacks a valid signature, or shows unusual network activity, run antivirus scans and verify with Box support.
Why Is box-sync.exe Running on My PC?
Box Sync runs to keep your Box cloud and local sync folders consistent. It may start at login and continue running to monitor changes and manage transfers.
Reasons it's running:
- Active Sync Use: You have Box-synced folders open and syncing; changes trigger watcher activity and transfers.
- Background Auto-Sync: Box Sync runs in the background to catch changes even when the UI is minimized.
- Startup Entry: The app is configured to launch at Windows startup, keeping files in sync as you sign in.
- Pending Uploads/Downloads: Large batches or recently added files require processing, causing continued activity until complete.
- Conflict Resolution: When conflicting edits occur or re-synchronization is needed after offline work, the process may linger briefly.
Can I Disable or Remove box-sync.exe?
Yes, you can disable box-sync.exe. Pausing sync or quitting the app stops activity; you can uninstall Box Sync if you no longer need cloud syncing.
How to Stop box-sync.exe
- Pause/Exit from Tray: Click the Box Sync tray icon and choose Pause or Quit.
- Close UI: From the Box Sync window, select Exit or Quit to stop the UI and backing process.
- End Task: Open Task Manager (Ctrl+Shift+Esc), locate BoxSync.exe, right-click End Task.
- Disable Startup: Task Manager → Startup tab → Disable Box Sync to prevent auto-start.
- Stop Background Apps: In Box Sync settings, turn off 'Start Box Sync on system startup' and disable background syncing options.
How to Uninstall Box Sync
- ✔ Windows Settings → Apps → Apps & features → Box Sync → Uninstall
- ✔ Control Panel → Programs → Uninstall a program → Box Sync → Uninstall
- ✔ Consider Box Drive or alternative syncing methods if needed
Common Problems: Sync Delays or High Resource Usage
If box-sync.exe is slow or using unexpected resources, review the common causes and apply the recommended fixes.
Common Causes & Solutions
- Too Many Changes: Massive file edits trigger bulk uploads; allow time for completion or pause heavy activity until changes subside.
- Large File Uploads: Large files can consume bandwidth and CPU; schedule large transfers during off-peak hours.
- Network Congestion: Check network performance and firewall rules; ensure Box services are not blocked.
- Conflicting Local Edits: Resolve conflicts via Box web UI or within the Box Sync client to prevent repeated retries.
- Outdated Client: Update Box Sync to the latest version from box.com to fix bugs and improve efficiency.
- Antivirus Interference: Add Box Sync folders to antivirus exclusions to reduce scanning overhead.
Quick Fixes:
1. Quick Fixes:
2. 1. Pause Box Sync and check for large pending transfers
3. Review and prune conflicting files in Box folders
4. Update Box Sync to the latest version
5. Exclude Box Sync folders from real-time antivirus scans
6. Restart Box Sync or reboot the system
Frequently Asked Questions
Is box-sync.exe a virus?
No, the legitimate Box Sync executable from Box, Inc. is not a virus. Verify the file path is C:\Program Files\Box\Box Sync\BoxSync.exe or C:\Program Files (x86)\Box\Box Sync\BoxSync.exe and check the digital signature for Box, Inc.
Why is box-sync.exe using so much CPU?
CPU usage can spike during large sync batches or when many files change rapidly. Use the Box Sync tray to pause activity temporarily, or review which folders are triggering changes.
Can I delete box-sync.exe?
You can uninstall Box Sync via Windows Settings → Apps if you no longer need it. Your Box data remains in the cloud; local copies depend on your sync settings.
Can I disable box-sync.exe from starting at boot?
Yes. Disable the startup entry in Task Manager's Startup tab or use Box Sync settings to stop launching on system startup.
Where are Box Sync files stored locally?
Box Sync stores a local copy of your synced folders in the designated Box Sync folder on your system, typically under C:\Users\<Username>\Box\Box Sync or the configured local sync path within Box settings.
Does Box Sync work with external drives?
Box Sync can synchronize folders on local disks, which may include external drives attached to the system, provided they are configured in the sync settings and connected when syncing.