miscellaneous error -455
Universal Control is not working between my MacBook Pro and iPad Pro. The following error message appears on my MacBook, Unable to Connect to "###" A miscellaneous error occurred (-455).
MacBook Pro Apple Silicon
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User profile for user:
Sparks0829
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Community Specialist
Hi there M_50-58,
To start, you'll want to make sure your MacBook Pro and iPad Pro meet the minimum system requirements for Universal Control:
Universal Control system requirements
Universal Control works with the following devices and operating systems. It requires one Mac and up to two other of these Mac or iPad devices.
macOS Monterey 12.4 or later
- MacBook introduced in 2016 or later
- MacBook Pro introduced in 2016 or later
- MacBook Air introduced in 2018 or later
- Mac mini introduced in 2018 or later
- iMac introduced in 2017 or later, or iMac (Retina 5K, 27-inch, Late 2015)
- iMac Pro
- Mac Pro introduced in 2019 or later
- Mac Studio
iPadOS 15.4 or later
- iPad Pro (all models)
- iPad (6th generation) or later
- iPad Air (3rd generation) or later
- iPad mini (5th generation) or later
Additional requirements
- Each device must be signed in with the same Apple ID using two-factor authentication. Universal Control does not support Managed Apple IDs.
- Each device must be within 10 meters (30 feet) of each other and have Bluetooth, Wi-Fi, and Handoffturned on.
- Your iPad must not be sharing its cellular connection and your Mac must not be sharing its internet connection.
If both devices do meet all the system requirements above, try these suggestions to see if they resolve the issue for you:
If you need help
When arranging your displays, if you don't see a display, try these solutions:
- If using macOS Ventura or later, click the add button (+) in the upper-right corner of the Displays settings window, the choose your iPad or other Mac from the menu.
- If using macOS Monterey, click the Add Display button the lower-left corner of the Displays settings window, then choose your iPad or other Mac from the menu.
- Make sure that each device meets the Universal Control system requirements and is using the latest software updates for Mac and software updates for iPad.
- Make sure that your devices are near each other—ideally within 1 meter (3 feet).
- Put your devices to sleep, then wake them up.
- Turn off Universal Control on each device, then restart each device and turn Universal Control back on.
You'll find this information here: Universal Control: Use a single keyboard and mouse between Mac and iPad
Take care.