How to fix a stuck gearshift in an Audi 80?

I noticed that my gearshift is stuck and won't shift gears. It's an Audi 80 model from 1993. What could be causing this issue and how can I fix it?

The most common cause of a stuck gearshift in an Audi 80 is a malfunctioning shift interlock solenoid. You may need to have this part replaced by a mechanic.

Check your gearshift cable for any signs of damage or wear. If the cable is damaged, it may need to be replaced in order to fix the issue.

Sometimes the issue can be a simple one, such as the gearshift getting stuck due to a build-up of dirt and dust. You can try cleaning the gearshift and see if that solves the problem.