sidecar error

Hello zanshan and welcome to Apple Support Communities.

It looks like no one has responded to your question. Here are a couple things that might help others answer your question:

Are you saying that you are seeing a 402 miscellaneous error when trying to use the Sidecar feature with a supported Mac and iPad?

Are you running a beta version of macOS Catalina

Cheers.

Hi zanshan.

Glad to hear you were able to get it sorted. Have a brilliant rest of your day.

Cheers.