"Device Timed Out" error in Sidecar

This fixed my issue. I faced the same error after updating to iPadOS 14.

This is what finally worked for me!

This still works. Worked for me right now. Thank you

This is a ****** functionality from macOS... it never works

Hello,

I turned off the handoff for both devices, signed out and back in of my icloud and I still cannot connect both. It keeps saying "device timed out".

Any additional suggestions?

Thank you. This worked for me.

MacBook Pro A1707 & the first iPad Pro 12.9'

Side car did not work at first and each time I tried I ended up with a "device timed out" error. I tried signing out and in to Apple ID, changing the pass and all these handoff, today view and light/dark mode tricks on iPad. Neither of them worked so I decided to reset settings and what finally worked was :

step 1. Reset the settings on iPad

Settings>General>Reset All Settings

step 2. Sign in to Apple ID on iPad

(wasn't working yet it was still showing -6079 error something like this)

step 3. Sign out and in to Apple ID on iPad

So far it works

Awful bug anyway

I was able to get Sidecar to work after restarting both the 2019 iMac and the iPad Air 3 and sign out/in of Apple ID.

Go to System preferences > Accounts > iCloud and turn on keychain. It will likely ask you to change your password. Give it five minutes and it should work again.

Make sure you turn off your VPN while trying to connect sidecar. I turned mine off and it fixed the problem. Even while pugged in.

Worked after restating MacBook pro! Thanks you