I everyone,
I know this is not a support site (per say) but I want to ask a “General Question” to see if anyone else has come across a particularly vexing issue I have with a site……………………..
At random times during the day users will be forced to re-authenticate if they are already logged in or as they log in they all get the generic log in screen poppi up three times then they get a blank screen.
In my experience this has always been simple change in the browser settings & yet despite reassurances from the on-site technical team that ALL browser are configured correctly there are still many occasions where users are being prompted to login & the credentials are being rejected & the user gets a blank screen.
I’m fairly sure it’s actually a network issue within the company, or an Active Directory Issue but I am being constantly told by an increasingly irate IT Manager that it has to be SharePoint.
Has anyone else ever had this experience, is there a default timeout for authentication to AD that I don’t know about?
Any ideas of pointers would be greatly appreciated because I am all Googled out of this issue now 🙁
Tia
Funnily enough I have the same issue creating sites & WebApps too Vlad, the sites get created but you can’t access them just get a 404 error, I have to deactivate & then re-active SharePoint Publishing to get to the site………Thanks for the link too, will have a look.
Ironically I’ve just been prompted to log in again arrrggghhhh!
Don’t forget that if an unauth exception happens anywhere in code and not in elev priv it is going to ask the user for credentials. You need to check what the pages are doing, accessing any assets over the network, unpublished assets, rss feeds etc?
Is this all pages?
Is it the page which causes it or an asset the page requests? Use fiddler to track down which requests are causing the 401.
Browser settings wise, site must be in the Intranet zone to automatically pass credentials. This becomes irrelevant though if the user types them in correctly.
Another check is lob Fiddler onto a sick machine and see which request is causing the prompt. My bet is its something coming from a different domain, or an unpublished asset.
Hi Jonathan,
Usually the “three logins and blank screen” is associated with the LoopBack Check when looking at the sites FROM the SharePoint server.
What else I would try, even if I am nut 100% sure it’s the problem, is increase the sharepoint timeout delay from IIS manager. It caused me problems in the past on slow envrionments and I couldn’t even create site collections or WebApps. link: http://support.microsoft.com/kb/2543306
Can you make sure that for the users, the zone *.yourdomain.com is either in the intranet zone OR in the trusted zone with custom level (send username and password) , so sharepoint automatically picks up their credentials.
