It happens that the Vertec desktop app fails to start with the following error message: Unable to complete network request to host.... The Windows Error Code is 10061 (Connection refused).

Typically, the problem occurs after the Cloud Servers is booted. One reason for this is that an Exchange service (mad.exe) or an IIS service (inetinfo.exe) grabs port 3050. Port 3050 is the default port for Firebird databases. In Win 2003, the problem also occurred with the NT Replication Service service. The problem can also occur if the entry in the service file (C:\winnt\system32\drivers\etc) is correct. The problem occurs when certain programs do not follow the port allocation in the Services file. It is also possible that the service is not running.

First determine if the Firebird service is started. If it is not, start it. If this does not work or the service is already running, follow the instructions below:

The first step is to determine which service is occupying the port. The best way to do this is to use a program that shows you the active ports, a so-called port scanner. A good program for this is CurrPorts from NirSoft, which can be downloaded free of charge (this product is provided by a company that Vertec AG has nothing to do with. Vertec AG disclaims any liability for use with this product).

1. All users must exit Outlook
2. On the server:
   1. In Services (Control Panel), look for Dienste Microsoft Exchange ....
   2. Stop all Microsoft Exchange services
   3. Find the Firebird services: Stop Firebird Guardian (ignore any message). Then restart Firebird Guardian. Firebird Server will start automatically)
   4. Restart Exchange services in the following order:
      1. System supervision
      2. Information storage
      3. MTA stacks
      4. Routing module
      5. POP3
      6. IMAP4
3. Verify: Local port 3050 must be assigned to Firebird (fbserver).
4. Outlook can be used again, the desktop app should work!

1. Locate the service that is interfering in the Services (Control Panel). Stop the service.
2. Find the Firebird services: Stop Firebird Guardian (ignore any message). Then restart Firebird Guardian. Firebird Server will start automatically)
3. Restart the service you previously turned off.