An error occurred when accessing the Office Document Cache [FIX]

Tashreef Shareef
by Tashreef Shareef
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Microsoft Office uses the Office Document cache to make sure the changes made to the Office files are saved in the cloud. Sometime, the files may get corrupted or damaged due to abrupt closing of the application and show office document cache error.

The full error reads An error occurred while accessing the Office Document Cache. Close and reopen the Upload Center to try again. If the problem persists, move or delete the cache in the Upload Center settings dialog box. If you are facing this error, here is how to troubleshoot this problem on your Windows system.

Can’t access the Office Document Cache? Here’s what you need to do

  1. Delete Microsoft Office Document Cache
  2. Kill Microsoft Upload Center Task / Delete Registry Keys
  3. Uninstall Skydrive

1. Delete Microsoft Office Document Cache

The first method to fix this error is to delete your Microsoft Office Document Cache manually. Deleting the cache does not affect your saved documents but helps you to fix the syncing issue.  Here is a two-step guide to doing the same.

Perform a Clean Boot

Performing a Clean Boot is not necessary but recommended. This is to ensure that cache files don’t get loaded during startup and stop the user from deleting them. Here is how to do it.

  1. Press Windows Key + R, to open the Run dialog box.
  2. Type msconfig and hit enter to open System Configuration.
  3. In the System Configuration window, click on Services tab.System Configuration - Services - Hide microsoft services
  4. Now, click on “Hide all the Microsoft Services” option. This will hide all the essential Microsoft Services.
  5. Now you need to disable all the remaining services. Click on the “Disable All” button.
  6. Go to the Startup tab and click on the Open Task Manager.
    startup tab An error occurred when accessing the Office Document Cache
  7. In the Task Manager window, under the Startup tab, select all the startup apps and click on Disable. Disable all the apps one by one.
    Disable All Startup apps An error occurred when accessing the Office Document Cache
  8. Close the Task manager and go back to the System Configuration window.
  9. Click Apply and then click OK to save the changes.
  10. Close the System Configuration window and restart your system.

Delete Microsoft Office Document Cache

After the system restarts in Clean Boot state, do the following.

  1.  Type Microsoft Upload Center in the Cortana/Search bar.
  2. Click on Microsoft Upload Center to open it.
    Microsoft Upload Center - Settings An error occurred when accessing the Office Document Cache
  3. Now, click on Settings.
    Microsoft Upload Center - Delete Cache An error occurred when accessing the Office Document Cache
  4. Click on the Delete cached files button to delete the cache. Click OK.
  5. Close Microsoft Upload Center.

Open System Configuration and enable all the services that you disabled. After the restart, you should have resolved the Microsoft Office Document cache error.


2. Kill Microsoft Upload Center Task / Delete Registry Keys

If the issue persists, you can try to kill the Upload Center services and then delete the Cache files manually. We will also delete a few keys from the Registry editor. Here is a three-step guide to doing the same.

Kill the Upload Center Task

  1. Right-click on the Taskbar and select “Task Manager”.
  2. In the Process tab, click on the Name tab to sort using the name.
  3. Look for a process named “Microsoft Office Upload Center”.Microsoft Upload Center - Process - Task Manager An error occurred when accessing the Office Document Cache
  4. Right-click on Microsoft Office Upload Center and click on “Go to details”.
  5. Here you can see all the service that “Microsoft Upload Center” is using.
    Microsoft Upload - Taks Manager - MSOUC-EXE - End task An error occurred when accessing the Office Document Cache
  6. Right-click on “NSOUC.EXE” and select End Task.
  7. See if any other Microsoft Upload Center related services are running. Select all the related services and click on End Task. If no more services found, close the Task Manager.

Delete FileIO Registry Keys

  1. Press Windows Key + R.
  2. Type regedit and hit Enter.
    Upload Center - delete Registry Keys FileIO An error occurred when accessing the Office Document Cache
  3. In the Registry Editor, navigate to the following location:
    • Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\FileIO
  4. Delete all the keys inside the FileIO folder.
  5. Close the Registry Editor.

Want to block access to registry editing tools? Here’s how to do that properly!


Rename and Delete OfficeFileCache Folder

Note: First make sure to enable Hidden Items in the File Explorer to unhide any hidden items in the Office folder.

  1. Open “File Explorer”.
  2. Click on the View tab.
  3. Under the Show/Hide section “Hidden items” box is checked.
    show hidden items file explorer An error occurred when accessing the Office Document Cache
  4. In the File Explorer navigate to the following location.
  5. %userprofile%\AppData\Local\Microsoft\Office
  6. Open your Office version folder. In this case, it is office 2016/2019 so click on 16.0. If you are running Office 2013, click on 15.0 folder.
    Upload Center - FileCache folder An error occurred when accessing the Office Document Cache
  7. Here you should see a folder named OfficeFileCache.
    Office Upload Center - OLDfileCache An error occurred when accessing the Office Document Cache
  8. Select the OfficeFileCahche folder and rename it as Old_OfficeFileCache.
  9. After the file is renamed, reboot/restart the system.
    Upload Center - OldFileCache Delete An error occurred when accessing the Office Document Cache
  10. After the Restart check if the Microsoft Upload Center is recreating the folder named OfficeFileCache inside %userprofile%\AppData\Local\Microsoft\Office\16.0
  11. If the new OfficeFileCache Folder is created, delete the Old_OfficeFileCache folder.

3. Uninstall Skydrive

skydrive An error occurred when accessing the Office Document Cache

If you have SkyDrive installed, you can fix the issue by uninstalling Skydrive and then reinstalling it. Here is how to do it.

  1. Launch Skydrive and remove your computer from the drive.
  2. Go to Control > Program > Programs and Features. Select Skydrive and click on Uninstall.
  3. Download and Install Skydrive.
  4. Reboot your system and check for any improvements

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