Would you so kind to help me with my problem:
MS Office 10
Microsoft Office to Work with WebDAV:
I connected network drive WebDAV from ownCloud. To open the document Microsoft Office Word and Exel from the WebDAV, Microsoft Office require authentication ownCloud.
How do I avoid login dialog when using Microsoft Office?
After one year, you could consider to update:
There was a fix for the use with office on external smb storage. It will also close some security issues:
I didn't find a way to avoid the login. You are welcome to ask Microsoft, interested in their answer.
Other WebDAV Clients work better for me. Cyberduck or the commercial variant Mountainduck.