Reports that USB hubs for printers and monitors can no longer be used after updating to macOS Sonoma 14.4

Mac users who updated to ` `macOS Sonoma 14.4, '' released on March 7, 2024 (local time), have been posting reports that their USB hubs for printers and monitors are no longer usable.

macOS Sonoma 14.4 is breaking printers
https://appleinsider.com/articles/24/03/14/the-macos-sonoma-144-update-is-breaking-printers-for-some-users

macOS Sonoma 14.4 update breaking USB monitor hubs
https://appleinsider.com/articles/24/03/12/latest-macos-sonoma-update-is-breaking-some-usb-hubs-in-monitors

Reddit user Impressive-Lawyer957 reported that his USB monitor hub stopped working on his Mac after updating to macOS Sonoma 14.4. He connected his MacBook Pro with M2 Pro to an external monitor ( Gigabyte M34WQ ) via a Thunderbolt 3 cable, and also used the monitor's USB hub to wire a mouse and keyboard. is. However, after updating to macOS Sonoma 14.4, it seems that the keyboard and mouse are no longer detected. In addition, he noticed that his MacBook Pro, which was charged to 100% before the update, gradually lost battery power while connected to a monitor.

Usb hub on monitor no longer working on Macbook after updating to Sonoma 14.4
by u/Nobodys10 in MacOS

Multiple users have similarly reported that their monitor's USB hub stopped working after updating to macOS Sonoma 14.4. Similar reports have been made by readers of X (formerly Twitter), Reddit , and Apple-related media Appleinsider.

X user Rhys Morgan posted, ``I'm glad that macOS 14.4 completely disables display KVM. It doesn't seem to recognize USB devices connected to the monitor (the monitor is also a USB hub).'' I reported a similar issue.

Love that macOS 14.4 has completely killed the use of my display KVM. Just not picking up any USB devices plugged into my monitor (or even that my monitor is a USB hub too).

— Rhys Morgan (@rhysmorgan) March 8, 2024

Countermeasures that are considered effective for all users have not been reported at the time of writing, but such as completely turning off the monitor and restarting it, or setting 'Allow accessory connections' in the system settings. Some people have reported getting their monitor USB hub working again by manually enabling it.

In addition, there have been reports of cases where updating to macOS Sonoma 14.4 deletes or corrupts the printer driver, making the printer unusable. This issue has been reported on Reddit and Apple's official support forums , and it seems that the error message 'An error occurred while trying to add an invalid file descriptor for the selected device' appears. .

On Reddit, when you check the folder that stores PPD (PostScript Printer Description), which is a file that describes the specifications of a PostScript printer, the PPD file does exist, but when you try to print, there is no PPD, so it prints. It has been reported that it throws an error saying that it is not possible.

New Mac OS 14.4 update - broke printing, no drivers listed
by u/Fhaxy in MacOS

In response to these reports, some pointed out that ` `CUPS , the printing system of macOS, has been removed.''

Additionally, this issue has also been attributed to Microsoft Defender, and some users may have set the privacy and security settings to full access to 'com.microsoft.dlp.daemon' either locally or using a JAMF configuration profile. They report that allowing disk access resolved the issue.