Troubleshooting when using the FORNAV reporting service for printing (Server Print)

Normally, when the printer driver is working correctly, if an error occurs then FORNAV creates a Windows event log entry with a detailed description of the error, and the FORNAV reporting service keeps accepting new requests from Business Central.

However, the FORNAV reporting service is vulnerable to printer drivers that have pop-ups in the UI, like the standard Microsoft Print to PDF printer, or printer drivers in general that become unresponsive due to driver errors. In both cases, the FORNAV reporting service hangs and stops processing requests from Business Central. Unfortunately, there is no way to detect such a situation, and you have to restart the FORNAV reporting service to be able to handle new requests.

From version 8.0.0.2669 and later, you can inspect the Windows event log to identify the printer that is causing the issue.

When printing starts, FORNAV creates a Start printing entry:

If the job completes successfully, this is followed by an End printing entry. If there is no End printing entry, then there is a problem with the printer driver that you must investigate further.