After updating to Tahoe, USB devices connected via USB hub are no longer recognized

I'm having a similar problem with an OWC Thunderbolt dock, although it only afflicts my iPhone. Since the Tahoe update, my phone is not mounted by Finder (although it does charge) and is not accessible by Image Capture or Xcode. Yet a thumbdrive plugged into the dock mounts just fine.

Plugging the phone into the computer with the same cable causes it to mount, so it's not the cable.

I do experience the same issue. I have a MacBook Pro M4 and after I updated to MacOS 26 my monitor and webcam which are connect via Satechi Thunderbolt 4 Dock Slim Hub Pro are not being recognized anymore.

When I plug the monitor into my MacBook directly it works however I use my Mac in clamshell mode so my whole setup is messed up now.

I just updated to MacOS 26.0.1 but the problem still persists.

Having a very similar issue right now. Just updated to Tahoe 26, and my Baseus multi-port usb-c dock which was working absolutely fine just stopped being detected post update, immediately. Non-existent in the system report.

Every single peripheral is connected to that dock, now im currently on hdmi to a monitor and connecting my keyboard directly to my Mac mini to type this.

Mac mini 2024 , M4 Pro.

Any fixes yet?

Same here with Nedis USB-C 7 port hub, working fine on Sonoma, but after update to Tahoe no longer working. Tried every obvious solution (reboot- disconnect hub - reconnect etc). Usb-C hub is visible in system properties and also usb-drives connected to hub are visible there. However in finder they are not showing as external drive (the setting to show external drives in finder is ticked). apple device is iMac M1. update to MacOS 26.0.1 did not solve the issue.

Have a CalDigit Thunderbolt 4 Element with ext. Drives for back up connected to a MacMiniM1. Since Tahoe after automatic backup + unmount + PowerOff the drives AND then PowerOn the next day the drives are not recognized. Not in Diskmananager etc.

After restarting the Mac the drives appear. Backups etc. run fine.

back-up ends+unmount+poweroff I cannot get access back until restart…

sounds like the same sort of issue mentioned here

br -T.

I am on an M1 Mac Studio, and nothing gets recognized through a USB hub after the Tahoe update.

Just seeing the "Accessory Not Enabled" notification, which I believe is due to the hub having an HDMI port. However, none of the USB ports are showing up either.

To follow up: Audio was NOT fixed. One cause appears to be Apple launching dozens of processes for iPhone simulators, if you have the development tools installed. There's a thread about it, and an apparent solution, here

This is the most annoying bug I ever had since I am using a Mac. Restarting it every single time when I connect it to my docking station or to an external display is a pain, but what makes me even more worried is that I cannot see that this issue has been noticed by Apple and therefore I am not sure when a fix is going to be delivered. Have you seen any update on this?

Doesn't matter.

At "Always Ask," it sees that an accessory is added, but it cannot detect anything plugged into the accessory.

I plugged the hub into a PC laptop and it works fine; detects the connected DVD drive via USB-A.

The mac does nothing after Tahoe upgrade.

Same problem. I have a Hyper Drive 11-in-1 hub (model GN30B). The MBP recognizes that an accessory has been added when I plug it in, but doesn't detect a drive or a monitor connected to it.

Hub works fine w/ a PC so it's not the hub.

Massive issues for me and cannot get my system to recognize my keyboard or mouse via USB or Bluetooth. I can’t get past setup screen now and extremely frustrated. I didn’t even download the first version. I downloaded whatever version was out on Friday night and my work is at a standstill right now. I have logi keyboard / mouse and Apple ones and nothing working for me. My desktop is useless right now. Moving to an old MacBook for now with Sierra. Not upgrading to Tahoe until this is resolved.

spparr wrote:

Is there any way to address this? My Macbook has an Intel processor, so setting "System Settings->Privacy&Security->Allow accessories to connect->Ask every time" as suggested in the previous thread above isn't an option.

Bummer, man. I didn't have this particular problem (but have other Tahoe connectivity issues) and would just reiterate the good advice given elsewhere in this chain, keep complaining to Apple via the Product Feedback - Apple URL that was given earlier. And not just once. Every time you try something and it doesn't work, complain again... Create volume on the issue. Good luck!

had the same with M4 pro after upgrade to 26.0.1. After trying every combination of reboots, power and connection went to 40cm cable solution. worked! Very annoying.

Same issue for me after updating to Tahoe. Using Amazon Basics Thunderbolt 4 dock.