OneDrive Fails to Start: Fixes That Work

If OneDrive fails to start on your Windows PC or Mac, the fix is usually a combination of resetting the app, checking your sign-in, and clearing a stuck cache. Below are the exact steps to get OneDrive running again, plus the reasons it stops and how to avoid it happening repeatedly.

Why OneDrive Stops Starting

OneDrive is a background app that runs automatically at sign-in. When it fails to start, the cause is almost always one of these:

• Corrupted cache files – OneDrive keeps a local database of file states; if it gets corrupted, the app can crash on launch.
• Sign-in or account sync issues – A changed password, expired token, or network problem can prevent the app from initializing.
• Conflicts with other software – Antivirus, VPNs, or other cloud sync tools can block OneDrive’s processes.
• Windows or macOS updates – A recent update can break compatibility with the installed OneDrive version.
• Group Policy or registry settings – On managed devices, IT policies may disable OneDrive.

Quick Fix: Restart OneDrive

The simplest first step is to restart the app. OneDrive runs in the background, so you may not see a window, but you can force it to restart:

1. Right-click the OneDrive cloud icon in the system tray (near the clock) and select Exit.
2. If the icon isn’t there, open Task Manager (Ctrl+Shift+Esc), find OneDrive in the Processes list, right-click it, and choose End task.
3. Press the Windows key, type OneDrive, and press Enter to relaunch it.

If the app still won’t start, proceed to the reset method below.

Reset OneDrive (Windows)

Resetting clears the cache and re-registers the app without deleting your local files. This fixes most startup failures.

1. Press Windows + R to open the Run dialog.
2. Type the following and press Enter:
   %localappdata%\Microsoft\OneDrive\onedrive.exe /reset
3. A command prompt window may flash, and the OneDrive icon should reappear after a few seconds.
4. If nothing happens, run the same command with /shutdown first, then the reset command.

After the reset, OneDrive will restart and ask you to sign in again. Your files remain in the OneDrive folder, and sync resumes once you sign in.

Check Sign-In and Account Settings

Sometimes OneDrive starts but shows a “sign in required” error, which can look like it’s not starting at all. To check:

1. Click the OneDrive icon in the system tray. If it says Sign in, click it and enter your credentials.
2. If you use a work or school account, ensure you’re signing in with the correct organization account, not a personal one.
3. Go to Settings > Account and verify the account is listed as “Signed in.”

If sign-in fails, try signing out completely, then sign back in. To sign out, go to OneDrive settings > Account > Sign out. This does not delete your files.

Clear OneDrive Credentials

Stored credentials can become outdated, especially after a password change. Clearing them forces a fresh authentication.

1. Open Control Panel > User Accounts > Credential Manager.
2. Click Windows Credentials.
3. Look for entries that start with OneDrive Cached Credential or MicrosoftOffice16 (for Office sign-ins).
4. Remove them, then restart OneDrive.

On macOS, go to Keychain Access, search for “OneDrive,” and delete the stored passwords. You’ll be prompted to re-enter them.

Repair or Reinstall OneDrive

If resetting doesn’t work, the installation itself may be damaged.

• Windows: Go to Settings > Apps > Apps & features, find Microsoft OneDrive, click the three dots, and choose Modify. This runs a repair that reinstalls the app while keeping your settings.
• Mac: Quit OneDrive, then drag the OneDrive app from Applications to Trash. Download the latest version from the Microsoft website and install it.

After reinstalling, you’ll need to sign in again. Your local files remain untouched.

Start OneDrive Automatically at Login

If OneDrive only fails to start after a reboot, it may not be set to launch automatically.

1. Right-click the OneDrive icon and go to Settings.
2. Under the General tab, check Start OneDrive automatically when I sign in to Windows.
3. If the icon isn’t visible, open OneDrive from the Start menu, then adjust the setting.

On macOS, go to System Settings > General > Login Items and add OneDrive if it’s missing.

Frequently Asked Questions

Will resetting OneDrive delete my files?

No. Resetting only clears the local cache and re-registers the app. Your files remain in the OneDrive folder and on the cloud. You’ll need to sign in again after the reset.

Why does OneDrive keep crashing on startup?

Repeated crashes are usually caused by corrupted cache files or conflicts with other software. Try the reset command first, then disable any third-party antivirus temporarily to test. If it still crashes, check for Windows updates or reinstall OneDrive.

Can I use OneDrive without starting it?

No, OneDrive must be running to sync files. If you don’t want it to start automatically, you can disable it in Task Manager’s Startup tab, but you’ll need to launch it manually to sync.

What if the OneDrive icon is missing from the system tray?

If the icon is missing, OneDrive may not be running. Press the Windows key, type “OneDrive,” and open it. If it still doesn’t show, run the reset command. The icon appears after the app starts.

Does OneDrive work on macOS?

Yes, OneDrive is available for macOS. The troubleshooting steps are similar, but instead of the Run dialog, you use Finder and Keychain Access. The reset command is not available on Mac; you must quit and relaunch or reinstall.

Why does OneDrive say “Sign in required” even though I’m signed in?

This usually happens when your authentication token expires. Sign out and sign back in, or clear your credentials in Credential Manager (Windows) or Keychain (Mac). If it persists, check your system time – incorrect time can break authentication.

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