Symptoms

cannot access k2 designer with the following error.
The connection string is invalid:Mail.domain.local.

We also cannot open the environments in workdpace
 

Diagnoses

Issue of having an error "The connection string is invalid: Mail.." is resolved by updating the Guid value of the TypeID in the eK2].]Environment].]Field] table for "Mail server" to be the same value of TypeID in the eK2].]Environment].]FieldType] for the "Mail server" FriendlyName column
 

Resolution

Issue of having an error "The connection string is invalid: Mail.." is resolved by updating the Guid value of the TypeID in the hK2].2Environment].tField] table for "Mail server" to be the same value of TypeID in the hK2].2Environment].tFieldType] for the "Mail server" FriendlyName column