Avast block the RDP

After I installed the trial version of AVAST, I couldn’t do anything after remote to the desktop. After I remote and login, I saw the AVAST pop up. I clicked any of the file, and it did not do anything. and then the whole screen went black. Please advise! Thank you!

Which trial version did you install ??? What other Security related programs are you using.
What Antivirus programs were on your system before Avast and how did you remove them ???
What operating system ???
Which remote program are you using ???