Sidecar was introduced a couple of months back which you can use to turn your iPad into a display that mirrors your Mac desktop. However, this new feature isn’t working for some on macOS Big Sur.
And as a result, there have been plenty of complaints about it on the official Big Sur forums.
As apparent from the above complaints, attempting a connection through “System Preferences > Sidecar > Connect to” does not work as the iPad fails to show up on the list of devices.
Users report that this issue began only with the Big Sur update and was non-existent previously on macOS Catalina.
Moreover, the mode of connection does not seem to matter as users report that they face the issue both when connected wired or wirelessly.
Fortunately, there is a couple of things you can try that have done the job for several users and may work for you as well.
What to do if Sidecar is not working on macOS Big Sur
Or in short, just sign out of iCloud on your iPad, then sign back in.
Hopefully, the above workaround fixed the Sidecar not working issue on macOS Big Sur for you. We also hope that Apple will address the matter soon.
For now, be sure to check out our dedicated macOS Big Sur update bugs/issues tracker for further coverage on issues like these.
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