My IT-/DB-administrator and I have a problem with permissions on SQL Server.

On a number of databases I get "INSERT permission denied" although I personally have the INSERT permission granted and am a member of a group user from the AD, which also has the permission.

My permissions to SELECT, CREATE, ALTER and DELETE work fine, but the permissions to manipulate data (INSERT and UPDATE) fail although granted.

The permissions are granted on the entire DB, but we have also tried granting them on specific tables. It makes no difference.

We have tried creating a new DB and granting the same permissions. Here I can INSERT without any problems.

We have tried deleting my personal user, so that I only have the grants granted through the group, but it doesn't help.

The DB-administrator can manipulate data as can other specific users, but when the administrator tries to manipulate as member of the group he too is denied the permission.

We are running short of ideas as to what to do. Any ideas are welcome.