Setup is SQL2005 SP2 with Reporting Services installed local on Win2003 64bit.
When users browse report manager on http://server/reports they get login dialog for every request, but only if they use IE7. In FireFox all works.
The site is in "local intranet" zone on IE.
It seems like it is a NTLM, I've tested reinstall, change permission on service account, change permission on SRS directory, no works.
Best Answer
Solution!
Change NTAuthenticationProviders on IIS with adsutil.vbs script to "NTLM,Negotiate" (script found in \inetpub\adminscripts)
run
(w3svc/1/ is the default website, change 1 to the right website nr)
to verify settings run