When the system started the update to the latest release it stalls. Message "The feature you are trying to use is on a network resource that is unavailable" is pointing to the installation package "Wealth-Lab Pro 6.6.msi" not found or not available. The upgrade to Windows 10 a few months ago may had something to do with this.

It also tells me that the update is mandatory and does not allow the application to start.

Any suggestion as I can't launch the application any more would be appreciated

Please try to uninstall WLP and restart Windows, then perform a clean install of 6.9.17.

If you need a fresh download of 6.9.17, go here and scroll down to the middle of the page: http://www.fidelity/wlp

The problem is WLP will not uninstall. It can seem to find or use the installation file. Is there a file I should search and find location to point it to?

Attached is error screen

Give one of those uninstaller utilities out there a try.

Thanks "MicrosoftProgram_Install_and_Uninstall.meta.diagcab" did the trick.

Good choice. Glad to have helped.