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Large files open in read-only mode in Office or fail to open in Adobe

MacroView Support
  • Updated

Issue

In SharePoint, large files with size more than 50MB may not open as expected.

  • In Office: Large files may open in read-only mode.
  • In Adobe: Large files may fail to open, displaying the error "There was an error opening this document. The file size exceeds the limit allowed".

Cause

Windows applications use the Web Client local service to access documents on a network or the internet using WebDAV. The Web Client local service has a default file size limit of 50MB.

Resolution

To resolve this issue, you need to change the value of the WebDAV Redirector registry key value FileSizeLimitInBytes which specifies the maximum size in bytes that the Web Client local service allows for file transfers. FileSizeLimitInBytes is located in the registry key:

HKLM\SYSTEM\CurrentControlSet\Services\WebClient\Parameters

For detailed instructions to make this change, see Large Publisher files open in read-only mode.

To learn more about FileSizeLimitInBytes, see WebDAV Redirector Registry Settings.