[Alt] key problem when remote desktop Windows via Remmina

If you are using Xfce 4 and encounter the following problems using [Alt] key inside Microsoft Windows remote desktop session:

• [Alt] key does not work as per expected
• clicking [Alt] + mouse middle button move you away from your remote desktop session

then you should try this simple and straight forward trick before going too technical.

• Go Settings > Settings Manager > Window Manager Tweaks > Accessibility > "Key used to grab and move windows" > set it to "None"

Voila! Now it should works like charm. Otherwise... you might have to Google around and read about re-map key, etc.. Good luck!