Office 2010 and Basic Authentication on IIS fails to open documents

[Jascha Minow]

Hi,

I have just upgraded my Office 2007 to 2010 (yes the RTM build) and am
running into some serious trouble accessing documents stored on a web server
or SharePoint server configured to only allow Basic Authentication.
Word opens as expected but does not do anything else (no prompt, no document
download, nothing). Accessing any Office document on a server or SharePoint
2007/2010 server that has e.g. Integrated Windows authentication enabled,
all is good I get prompted for credentials and the document downloads and
opens as expected and as in Office 2007.

Where is the setting or registry key to make Office 2010 work with IIS and
SharePoint configured to only use Basic Authentication? This can't be gone!
I know this is less secure but in an Intranet environment acceptable. This
is causing major trouble and a resolution or hint is greatly appreciated!

Thanks for a hint
Jascha

 

[Semen]

For me the same
Unable to open data connection to the external sharepoint portal with the
"non-windows" credentials.

 

[Semen]

Try this solution:
open "regedit"
go to: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\Internet
Create a registry key called BasicAuthLevel as a DWORD
And set it to 2

It works for me.