On Windows, the Services file has been overwritten, either on the DB2 Client's PC or the Server.
The following entries will need to be copied back into the Services file on the Client:
vwkernel 11000/tcp # DB2 Warehouse Logger
vwd 11001/tcp # DB2 Warehouse Logger
vwlogger 11002/tcp # DB2 Warehouse Logger
If the problem has occured on the DB2 Server, many entries may be missing at this point, but these three would need to be added back for sure.
Our services file is located at: C:Windows\System32\drivers\etc