OneDrive Error Codes

How to Fix OneDrive Work Account Sign-In Error 0x8004dec5

Maira Mehtab Sep 21, 2026 869 views

Question details

The user is unable to sign into their OneDrive work account due to error 0x8004dec5, which disrupts local file synchronization.

Product: Microsoft OneDrive
Device & OS: Windows
Scenario: Signing into a Microsoft OneDrive work account on a PC to enable local desktop file synchronization.
Observed behavior: OneDrive is visible in File Explorer, but the taskbar icon shows it is not signed in. Synchronization fails with error code 0x8004dec5 (error tag 657rx and code 2148073494). Web browser access to files remains unaffected.

Before you start

Verify that your work account is still active and that you can access your files by logging into OneDrive via a web browser to rule out server outages or account suspensions.

Solution 1Recommended

Clear Office Cache, Remove Credentials, and Reset OneDrive

The most effective method to resolve persistent authentication errors is to completely wipe cached files and old Windows credentials before resetting the OneDrive application.

Error 0x8004dec5 typically indicates a conflict with stored account credentials or a corrupted Office file cache on your local Windows system. Removing these manually forces OneDrive to establish a fresh connection to your work account.

Unlink this PC from OneDrive

Click the OneDrive icon in your Windows taskbar, open 'Settings', navigate to the 'Account' tab, and click 'Unlink this PC'. Once unlinked, close the OneDrive application completely.

Clear the Office File Cache

Press Windows Key + R to open the Run dialog. Type 'C:\Users\<username>\AppData\Local\Microsoft\Office\16.0\OfficeFileCache' (replacing <username> with your actual Windows username) and delete all files inside this folder.

Remove Windows Credentials

Open the Windows Start menu, search for 'Credential Manager', and open it. Click on 'Windows Credentials' and remove any entries related to OneDrive or Microsoft Office.

Reset the OneDrive Application

Press Windows Key + R again, type '%localappdata%\Microsoft\OneDrive\onedrive.exe /reset', and press Enter. After a few minutes, restart OneDrive from the Start menu and attempt to sign in again.

Cache Cleared: Deleting the OfficeFileCache does not delete your personal or work documents; it only removes temporary synchronization data.

Solution 2

Install Windows Updates and Reinstall OneDrive

Updating the operating system and performing a clean installation of OneDrive can fix deeper software bugs causing the sign-in failure.

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Frequently Asked Questions

What does error tag 657rx mean in OneDrive?

Error tag 657rx is a diagnostic code associated with error 0x8004dec5. It typically indicates an authentication conflict where corrupted cached credentials or old Office cache files prevent your OneDrive work account from signing in successfully.

Can I still access my files if OneDrive shows error 0x8004dec5?

Yes, this specific error usually only affects the local desktop sync application. You can still view, download, and edit your documents by logging into your OneDrive work account through a standard web browser.

Why did clearing the OfficeFileCache not fix my sign-in issue?

Clearing the file cache alone is often insufficient if corrupted login tokens remain in your system. To fully resolve the issue, you must also remove any OneDrive and Office credentials from the Windows Credential Manager and run the OneDrive reset command.

Microsoft Office Error Codes