Just recently I was trying to view a Window Screen with a coworker and I was logged in and they were trying to log in to same device. Teamviewer Prompted me to ask "do want to share your screen" and it won't accept my "Share Screen"
If you want to share your screen with other colleagues, I recommend using TeamViewer Meeting, which is our dedicated software for online conferencing.
It is free for private use as well!
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