completely remove old lansweeper reference

[alceryes]

I had lansweeper 4.2 installed but uninstalled it because of non-use. I recently installed the newest version of lansweeper but was unable to use port 81 for the console because the installer said it was already in use so I had to use port 82.
This begs the questions of what other pieces of the old install are still lingering about. How can I COMPLETELY remove all reference of the old install and change the new install to use port 81?

TIA!

[Hemoco]

As stated previously: remove UltiDev if you were using this web server before and if it's now no longer in use.

[alceryes]

The previous lansweeper was definitely using port 81. In start/all programs I have the new lansweeper. What I'd like to remove is the old lansweepers reference to port 81 so that it can be used again.

TIA!

[Hemoco]

Maybe another application is using port 81.

It could also be the old Lansweeper ultidev webserver.
Search in start/all programs for anything ultidev related and uninstall it.