ADDED:
Saw this was already covered in another thread. You may delete if needed.
Hello!
Windows defender is not letting me download the new TBM 900 v1.1.10 update. Saying the zip file has a trojan Longage in it. Any thoughts?
Cheers!
You have updated to Catalina since the last time you installed the TBM. You will need to manually delete the TBM that is already installed and also trash the TBM Uninstaller located in X-Plane/X-Aviation