MSMQ, You Get "Invalid queue path name" Exception When Opening a Remote Private Queue

Example Symptom:

• You have a remote computer named XYZZY
• Inside it is a private queue named MyQueue
• You have written the MSMQ code in C# (or .NET)
• When accessing locally within XYZZY, you can use .\private$\MyQueue it works.
• When trying to get to the queue using "XYZZY\private$\MyQueue from another computer even on the same subnet and no firewall enabled, you now get an MSMQ exception stating "Invalid Queue Path Name"

Try This:

Instead of

XYZZY\private$\MyQueue

Try this way.

FormatName:DIRECT=OS:XYZZY\private$\MyQueue

Note, spell FormatName exactly how it is. It is the only part that is case sensitive!

--
This was tested on Windows Server 2008 R2 with .NET 3.5