Files downloading and uploading

New Contributor



we have a problem with our Sharepoint Foundation 2013. Users can neither download nor upload any file bigger then few megabytes. The ULS logs say:


Mapping Store error to Cobalt error. [Store Error: System.ComponentModel.Win32Exception (0x80004005): The parameter is incorrect at Microsoft.SharePoint.CoordinatedStreamBuffer.SPCoordinatedStreamBufferOnFile.EnsureStream() (for the download operation)




Cannot get OutputLockBytes from SPFileStreamManager: 0x80004005. (for the upload operation)


Any advice would be grated.


Thank you, Z

3 Replies

We have the same error when uploading files:
Name=Request (PUT: 1e2c37a0-79d9-9022-66e5-3cd69df0f695
Cannot get OutputLockBytes from SPFileStreamManager: 0x80004005. 1e2c37a0-79d9-9022-66e5-3cd69df0f695

Did you ever find the solution?



No, I had to install SharePoint Server at the end.

Alright thanks.

It appears to be something with the request size. 4MB works, 5MB is too much. I'll be going through the configs to see if there's a hard limit somewhere because that's what I'm expecting to find now.