Sharepoint 2010 FBA Site and Opera

Question

I have a SP2010 site with FBA enabled. I can open it using Firefox and Internet Explorer with no problem. But it gives me a 403 FORBIDDEN error when I try to open with Opera 11.

Is there anything I can do to fix this?

Thanks.

Answer 1

You may find this error due to Microsoft Office Live Add-in 1.3. Uninstall it if you have installed it. Have a look at this

Answer 2

It's not exactly the MS Office Live Add-in problem you're hitting with Opera.

Opera 12.16's user-agent string on Win7/64 bit is:

Opera/9.80 (Windows NT 6.1; Win64; x64; Edition United States Local) Presto/2.12.388 Version/12.16

And since that doesn't have "Mozilla" anywhere in it, Sharepoint assumes it's a WebDav client.

Here's what's really going on: http://blog.imason.com/sharepoint-fba-and-the-403-forbidden-error/

From: http://msdn.microsoft.com/en-us/library/cc250199(PROT.10).aspx

<4>
 Section 2.2.8: The WebDAV server in Windows Windows SharePoint Services 3.0
 technology checks the product tokens in the User-Agent request-header field sent
 with a request for the presence of “Mozilla” and the absence of either “Office”,
 “FrontPage”, or “non-browser” to determine whether to send an HTTP 302 redirect
 message to a login page when using ASP.NET Forms Authentication for
 unauthenticated clients. Otherwise, the server assumes that the client user
 agent is not a browser and will return either an HTTP 401 “Unauthorized” error