We have a web application 'samenwerken' (everyone has Read access) that has multiple SPSites.
On each SPSite, everyone has limited read.
On the SPWeb, there is a document library with multiple Excel documents. I give a domain user 'tester' read access to a file.
I run IE as that 'tester' user and copy paste the full url to the Excel document. The Excel opens perfectly and the content is shown in Excel. However, a prompt for credentials to connect to our SharePoint server pops up. When I enter the 'tester' credentials, it keeps popping up.
What I've already tried:
- According to http://www.techrepublic.com/blog/smb-technologist/prevent-unwanted-credentials-prompts-with-sharepoint-document-libraries/ I should set the authentication method to NTLM => this doesn't solve it.
- According to https://blogs.technet.microsoft.com/office_integration__sharepoint/2014/02/24/prompted-for-username-and-password-when-opening-an-office-file-from-a-web-server/ => the url of the web application 'samenwerken' and the sharepoint server url are in the trusted sites. Also, the setting of automatic logon is set for all users by GPO
What is wrong with the permissions and what can I do to solve this?