Fix Word Error 0x80004005 During Save to SharePoint Library

When you try to save a Word document to a SharePoint library, you may see error 0x80004005. This error stops the save process and can cause data loss if you do not have a local copy. The error occurs because Word cannot complete the file transfer to SharePoint due to a permission conflict, a corrupted Office cache, or a temporary communication failure between the local client and the SharePoint server. This article explains the root causes, provides step-by-step fixes, and lists related save failures and their solutions.

Why Error 0x80004005 Occurs During SharePoint Save

Error 0x80004005 is a generic COM error that translates to “Unspecified error.” In the context of saving a Word document to a SharePoint library, the error indicates that Word’s attempt to write the file to the server was rejected at the network or security layer. The three most common triggers are:

Corrupted Office Upload Cache

Word uses a local cache to manage files that are opened from or saved to SharePoint. If a cached copy becomes corrupted due to an interrupted sync or a file lock, Word cannot complete the save and returns error 0x80004005.

Insufficient SharePoint Permissions

The user account must have at least Edit or Contribute permission on the SharePoint document library. If the permission level is Read-only or if the library has custom permission settings that block write access, the save fails with this error.

Network Interruption or Firewall Block

A temporary network dropout, a proxy server timeout, or a corporate firewall that blocks the WebDAV protocol can prevent Word from establishing a stable connection to SharePoint. Without a confirmed write acknowledgment, Word aborts the save and displays the error.

Steps to Fix Error 0x80004005 When Saving to SharePoint

Follow the methods in the order shown below. Test after each method before moving to the next.

Method 1: Clear the Office Upload Cache

1. Open the Office Upload Center
   In Word, click File > Options. In the left pane, click Trust Center. Click the Trust Center Settings button. In the left pane, click Trusted Locations. Click the button labeled “Allow Trusted Locations on my network” if it is unchecked. Then click OK. Return to the Options dialog and click OK. Now open the Office Upload Center from the system tray by right-clicking the Office Upload Center icon and selecting “Settings.”
2. Delete cached files
   In the Upload Center settings window, click the “Manage Files” button. Select all listed files by pressing Ctrl+A. Click the “Delete Selected Items” button. Confirm the deletion when prompted. Close the Upload Center.
3. Restart Word and retry the save
   Close Word completely. Reopen Word, open the document that failed, and attempt to save it to the same SharePoint library.

Method 2: Verify and Fix SharePoint Permissions

1. Open the SharePoint library in a browser
   Navigate to the SharePoint site that contains the target library. Click the library name to open it.
2. Check your permission level
   Click the gear icon in the top-right corner and select “Site permissions.” In the Permissions pane, click “Check permissions.” Enter your email address and click “Check Now.” The results display your effective permissions. You must see “Edit” or “Contribute” listed. If you see only “Read,” contact the site owner to request higher permissions.
3. Request an upgrade if needed
   If your permission level is insufficient, ask the SharePoint administrator or site owner to grant you Edit or Contribute access on the library or the parent site.

Method 3: Save Locally and Upload Manually

1. Save the document to your local drive
   In Word, click File > Save As. Choose “This PC” as the location. Select a local folder such as Documents. Click Save.
2. Upload the local file to SharePoint through the browser
   Open the SharePoint library in your web browser. Click “Upload” and select “Files.” Browse to the local copy you saved, select it, and click Open. The file is uploaded directly, bypassing the Word sync channel.
3. Open the uploaded file from SharePoint in Word
   After the upload completes, click the file name in the library to open it in Word. Test saving changes by pressing Ctrl+S.

Method 4: Disable the WebDAV Redirector and Use HTTPS Only

1. Open Registry Editor
   Press Windows+R, type regedit, and press Enter. Click Yes in the User Account Control prompt.
2. Navigate to the WebClient key
   Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters.
3. Set BasicAuthLevel to 2
   In the right pane, double-click the BasicAuthLevel value. Set the Value data to 2 and click OK. This forces WebClient to use HTTPS authentication only.
4. Restart the WebClient service
   Press Windows+R, type services.msc, and press Enter. Find “WebClient” in the list, right-click it, and select Restart. Close Services. Try saving to SharePoint again.

If Word Still Has Issues After the Main Fix

Word Displays Error 0x80004005 When Saving to a SharePoint Library That Contains Required Columns

SharePoint libraries can have required metadata columns. If a document is missing a value in a required column, the save fails. Open the library in a browser, click the file, and edit the properties. Fill in all required fields. Then try saving from Word again.

Word Shows Error 0x80004005 After a Recent SharePoint Migration

If your organization migrated SharePoint from on-premises to SharePoint Online or changed the site URL, the old cached connection may be invalid. Remove the SharePoint site from the list of trusted locations in Word. Go to File > Options > Trust Center > Trust Center Settings > Trusted Locations. Select the SharePoint URL and click Remove. Then reopen the file from the new SharePoint URL.

Word Cannot Save to SharePoint After a Windows Update

A Windows update may have altered the WebClient service settings or the Office cache location. Run the Microsoft Support and Recovery Assistant for Office 365. Download the tool from the Microsoft website, select “SharePoint” as the problem type, and follow the on-screen instructions. The tool automatically repairs common connection issues.

Word Save to SharePoint vs Local Save: Behavior Differences

Item	Save to SharePoint Library	Save to Local Drive
File storage location	SharePoint server via HTTPS	Local hard drive
Permission requirements	Edit or Contribute on the library	No special permissions beyond folder access
Cache dependency	Uses Office Upload Cache; cache corruption blocks save	No cache; writes directly to disk
Network dependency	Requires stable internet or VPN connection	No network required
Error 0x80004005 likelihood	High if cache, permissions, or network fail	Extremely low; error is rare for local saves

You can now clear the Office cache, verify SharePoint permissions, and bypass the sync channel to save your document successfully. If the error persists, disable the WebDAV redirector or use the Microsoft Support and Recovery Assistant for Office 365. As an advanced tip, create a local copy of any document before editing it from a SharePoint library so you have a fallback if the save fails.