We have been seeing several occurrences where users failed to connect to SQL Server named instance on cluster. The error messages are usually as follow: For SNAC: C:\>osql -E -S cluster\inst [SQL Native Client]SQL Network Interfaces: Error...

In continuing with the theme of understanding error messages I'll discuss the "login failed" messages that are surfaced by the client and written to the server's error log ( if the auditlevel is set to log failures on login which is the default) in the...