UAC permissions

Hello. I have Teamviewer on a couple of my own PCs in my own network but my main PC/media server has been having an issue with UAC permissions for some time. My other computers have no problems yet I cannot get TV to start on this one because I have to manually tell it to accept the UAC permission. Everything is set to start as soon as Windows starts. I've tried setting up a task to auto run at startup and I have manually placed a shortcut in the Windows Startup folder. 

Is there any workaround of this, short of actually turning off all UAC permissions in the controi panel? The machine is fully up to date with TV version and all Windows updates. I have also tried running it as an administrator.

Thanks in advance.