Access denied for all (most?) users in all site collections of web app

Question

Hi,
I have a Sharepoint 2010 farm pre-SP1 (yes should be updated!) and for all site collections of a web app, all users are getting access denied.
Now in my title I said "most?" because I have found one user in another office who does not have this issue. This web app/site collections also do not go through f5 or any proxies.
Even if I add myself as a site collection admin via central admin, I get the same result. I've looked at everything, windows time on the server (not using kerberos), errors in event log (nothing), uls logs just say access denied (very helpful!), etc...
I can try what's suggested at http://social.technet.microsoft.com/Forums/en-US/e66f1b09-605d-4546-a581-2a9283c238c0/access-denied-for-all-users-and-for-site-collections-owner?forum=sharepointgeneralprevious but when asking colleagues, there's been no
changes, let alone with those accounts? I can do a get on the property tomorrow to find if there is a value set first, however.
Any suggestions on this?

Answer 1

Hi,
Please try logging in the site with farm account.
If it works, please make sure you have superuser and superreader accounts in CA > Application management > web application policy. If not, please add both accounts with the powershell script in the article below, this can cause all users denied when
access the site:
http://technet.microsoft.com/en-us/library/ff758656.aspx
Here is a similar thread:
http://social.technet.microsoft.com/Forums/sharepoint/en-US/a49b1ab8-273f-41e4-a0b8-be0e31c6733b/all-users-including-site-collection-admins-receiving-access-denied-from-one-site-collection?forum=sharepointadminprevious
Regards,
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