Pages and iMovies update will not complete
Around 9.00pm yesterday I allowed 'update all' in App Store for an update to Pages and iMovies.
OS is Monterey 12.6.1.
Neither update has completed, making both programs inaccessible. Cannot cancel manually. Have shut down system, left it 10 minutes before restart, but problem remains.
Launchpad on dock claims I have downloaded 2.79GB of 2.79GB with an icon stating "Installing 153.1MB of 153.1 MB. Been at this status for hours. In App Store the update screen just shows spinning blue circle.
Now 14.00 - I can live without iMovie but lack of access to Pages is critical.
Generally fast enough broadband, everything else appears to be working fine. 17 hours? Really?
No idea what to do next (searched here and Googled for the problem).
Thanks in advance
iMac 27″, macOS 12.6