unable to perform actions of admin level over Skype for business via screen sharing by taking contro

Hi,

Yes, this is a problem with the Skype screen sharing. The only way to solve it is to disable UAC completely but that is not recommended.

So you have to use another remote control software, if you are running Windows 10 you can use the build in Quick Assist. I think you have to do some settings for UAC, see link below.

https://support.microsoft.com/en-us/help/4027243/windows-10-solve-pc-problems-with-quick-assist

https://www.theexperienceblog.com/2019/10/24/fixing-uac-elevation-when-remote-controlling-via-quick-assist-or-teamviewer-etc/