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it will be a firewall blocking, or the equivalent [which webroot is]

not sure if web designer has 4K monitor support [designer pro has only just got it] - small point but have you checked in...

ok then, so something is probably blocking it as gary said, on the basis that your internet connection is working for everything else ?

no comfort, but the magix implementation of update from ver...

try running the program once as adminstator may fix it [rightclick on program icon to select]