Error Message: "Port in Use" or "Port Already Open"

When you attempt to start a communications program, you may receive one of the following error messages:

This behavior can occur if Rnaapp.exe is active in memory.

To work around this issue, follow these steps:

1. Press CTRL+ALT+DELETE to open the Close Program dialog box.
2. Click Rnaapp to select it, and then click End Task.
3. Start your communications program.

When you finish using a communications program and close the connection, Rnaapp.exe is still running and the port remains unavailable to non-TAPI programs.

Rnaapp.exe is left in memory to allow TAPI programs to open faster. Rnaapp.exe is eventually unloaded from memory (unless Dial-Up Networking Server is set to allow caller access), but it may take 10-15 minutes.