Issues with UserNotifcationCentre popups freezing

Hi all, I'm having lot of issues with UserNotifcationCentre popups freezing on my new (refurbished) 2019 i9 iMac running Monterey 12.4. Every time I try to install some new software I'm getting these popups that won't go away which means I can't install what I'm trying to install. I have to do a logout and this removes them. Any ideas please? Is this a bug in the OS?

iMac 27″, macOS 10.13

Posted on Jun 24, 2022 9:05 AM

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Posted on Jul 2, 2022 9:54 AM

The alerts can be dismissed from the Activity Monitor stopping the process UserNotificationCenter. The process will reappear next time the system shows another system alert.


The problem can be reproduced on affected computers by removing disk access for an application in Settings > Security & Privacy > tab Privacy > Full Disk Access. Then try to access a new folder with the same application.

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Question marked as Top-ranking reply

Jul 2, 2022 9:54 AM in response to T-O-MK77

The alerts can be dismissed from the Activity Monitor stopping the process UserNotificationCenter. The process will reappear next time the system shows another system alert.


The problem can be reproduced on affected computers by removing disk access for an application in Settings > Security & Privacy > tab Privacy > Full Disk Access. Then try to access a new folder with the same application.

Jun 25, 2022 8:42 AM in response to T-O-MK77

T-O-MK77 wrote:

Hi all, I'm having lot of issues with UserNotifcationCentre popups freezing on my new (refurbished) 2019 i9 iMac running Monterey 12.4. Every time I try to install some new software I'm getting these popups that won't go away which means I can't install what I'm trying to install. I have to do a logout and this removes them. Any ideas please? Is this a bug in the OS?
https://discussions.apple.com/content/attachment/f19bd0bd-40e8-415a-b53b-b4a5d0491427


See if there is anything here


Safely open apps on your Mac - Apple Support



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Issues with UserNotifcationCentre popups freezing

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