I have custom web services on mine SharePoint 2013 Machine for several years without problems. (Provided as FarmSolution). The FarmSolution has not been deployed to this farm in the past three months.
This morning (as an early Christmas present?!) Mine REST service request
it returns an HTTP 302 and is redirected to
because of unknown reasons.
I checked access to https: //mypage.domain.intern/_layouts/15/permsetup.aspx
The group setting for "read" has "domain users" as members and I also added "everyone" to make sure everyone should be able to use it, but this didn't help, the redirect always comes.
I am using the farm account with the URL and administrator accounts for the site collection, but I am always redirected to AccessDenied.
In the ULS Viewer I only get this information for the request:
Non-OAuth request. IsAuthenticated=True, UserIdentityName=0#.w|domainmy_farm_account, ClaimsCount=54
SPFederationAuthenticationModule.IsRedirectToLogOnPage: Detected a redirection but the redirect is not to a known signin page: https://mypage.domain.intern/_layouts/15/AccessDenied.aspx
I checked the Windows update history. There has been no new installation for 3 weeks.
The farm has 4 servers (2 front-end and 2 back-end servers), all of which do the same forwarding to AccessDenied.aspx.
I also tried to grant access to
and approve the requirements and give the user "full control"
Do you have an idea of what I can or should check?