ATC frequencies

[CopperNu]

Did you ever have Navigraph FMS Data installed? It looks like you didn’t properly uninstall, then basically the frequencies are missing.

See:

Removed Navigraph - Now No Data

You also need to delete the content.xml which will get rebuilt the next time the sim starts I believe. This is from the Navigraph forums official FAQ section. Look for the file here: Sim from Marketplace: %localAppData%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache Sim from Steam: %appData%\Microsoft Flight Simulator