Erland Sommarskog (6/26/2014)
Eh, they must of course be able to connect to the database. I don't know exactly what you mean with "gave permssion", but if you said "CREATE USER [Domain\Wingroup1]" you should not back out that.
By gave permission I went to DB2\Security\Logins and right clicked choosing New Login...
After selecting the group I then went to "User Mapping"
For the database I checked Map then checked db_datareader and db_datawriter permission (leaving public).