Sharepoint 2010 can't open documents
we have a very complex Sharepoint 2010 setup with two Loadbalancer clusters in the path. Both VS doing SSL offload, but encrypt it again. This is necessary to use Cookie persistence.
Surfing the Sharepoint is not a problem, but when clicking on a document to open it the user gets a popup "Choose a digital certificate":
"The website you want to view requests identification.
Please choose a certificate."
If the clients tries to open the file directly they get a popup: "Could not open https://URL/filename"
Bypassing all the loadbalancer does not show this error.
From the customer we also got the following link for potential troubleshooting:
There something with HTTP OPTIONS is mentioned, but I don't know how this affects our configuration. I expect that the SSL-offload breaks the session, but I don't know how I can further troubleshoot and at the end how to solve this problem.
Disabling HTTP OPTIONS and PROPFIND verb support in Sharepoint 2010 seems to be NOT an option for the customer, so how to solve it on the Loadbalancer?
Are you aware of such a behavior or do you need more information of our configuration?
Ciao Stefan :)