The SELECT permission was denied on the object ‘Users’, database ‘XXX’, schema ‘dbo’

1. Open SQL Management Studio
2. Expand your database
3. Expand the “Security” Folder
4. Expand “Users”
5. Right click the user (the one that’s trying to perform the query) and select Properties.
6. Select page Membership.

7. Make sure you uncheck

   db_denydatareader

   db_denydatawriter

This should go without saying, but only grant the permissions to what the user needs. An easy lazy fix is to check db_owner like I have, but this is not the best security practice.