P: Cannot tether Sony A7 IV (ILCE-7M4) with latest 3.01 firmware

We now understand the issue on Windows following a Teams meeting with a couple of Adobe engineers this morning.

Lightroom Classic needs to interact with the camera as a WinUSB device. However, if you have Sony Imaging Edge installed, it will likely install a different driver for the camera that is incompatible with Lightroom Classic's tethering. The engineers believe there is a similar incompatible driver issue if you have Capture One installed.

If you connect the camera in PC Remote mode, open Device Manager, and see a "Sony Remote Control Camera" under "libusbK Usb Devices" then Lightroom Classic's tethering will not work. To fix this situation:

• right-click "Sony Remote Control Camera"
• choose "Update Driver"
• choose "Browse my computer for drivers"
• choose "Let me pick from an available list of drivers on my computer"
• choose "MTP USB Device"

You should then be able to tether successfully in Lightroom Classic. If you want to use Sony Imaging Edge's Remote program, you must switch the driver back to the "Sony Remote Control Camera" driver. When the camera is using the correct driver for Lightroom Classic, it will appear under "Portable Devices" as its Sony model name, so "ILCE-7M4" for an A7 IV.

If you don't want to use the Sony Remote software at all, you can uninstall the Sony driver as follows:

• right-click "Sony Remote Control Camera"
• choose "Uninstall Device"
• check "Attempt to remove the driver for this device"
• press "Uninstall"
• disconnect and reconnect the camera

If you have Imaging Edge installed and you do not uninstall the Sony driver then Windows will prefer the Sony driver if the camera is reinstalled for any reason.