Wireless Sidecar not working - Works with usb cable

Going through all the sugested steps to get wireless sidecar working without any luck , I by chance disvovered that iMessage gave the "Unknown error" thing. To fix that you have to do the delete Keychain thing on the iMac, and this also fixed wireless Sidecar for me.

Posted on Apr 30, 2022 10:45 AM

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Sidecar not working over USB. Error: "To use Sidecar, turn on Wi‑Fi or connect over USB." My setup… 15" MacBook Pro (2019) with macOS Catalina 10.15.1 iPad Pro 12.9" (2018) iPadOS 13.2.2 The iPad is connected via an Apple USB-C cable and is a trusted device. Nothing else is connected. I can see and access the iPad in the sidebar. However, the only way I can connect Sidecar is over WiFi. If I turn off WiFi and try to connect over USB I get the following error… I've tried restarting both devices. I'm sure this was working last week before the recent minor OS updates on both platforms.
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Wireless Sidecar not working - Works with usb cable

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