Sidecar It is perhaps the most interesting feature launched by Apple this year for iPad and Mac devices. With the sidecar can be connected and can work jointly on a Mac cu Catalina macOS and on one iPad with operating system Ipados. Is a "remote display"By which iPad becomes a functional extension of Mac, the user can benefit from the Touch Screen characteristics, Apple Pencil in the applications open on Mac.
In order for the sidecar to work, both devices need to have compatible operating systems. Catalina macOS or newer and Ipados 13 or newer (with the mention that both operating systems are currently in Beta public version, and this autumn will be launched in the final version for all users).
Many users are already testing the new operating systems on Mac and iPad devices, but they encounter problems and errors of side connection between devices.
"You can’t open the “Sidecar” preferences pane because it is not available to you at this time. To see this preferences pane, you may need to connect a device to your computer. ” or "A miscellaneous error occurred (-401)“.
Possible causes from which Sidecar does not work between Macos Catalina and iPados
Mac and iPad models compatible sidecar
Desi Catalina macOS can be installed on devices launched by Apple in 2012 (MacBook 2015 or newer, MacBook Air 2012 or newer, MacBook Pro 2012 or newer, Mac mini 2012 or newer, iMac 2012 or newer, iMac Pro 2017 or newer, Mac Pro 2013 or newer), the characteristics of the side is only available for newer models.
Mac models compatible sidecar:
Late 2015 27″ iMac or newer
iMac Pro 2017
Mid 2016 MacBook Pro or newer
Late 2018 Mac mini or newer
Late 2018 MacBook Air or newer
Early 2016 MacBook or newer
Mac Pro 2019
Sidecar compatible iPad models:
iPad Pro - All models
iPad (6th generation)
iPad (5th generation)
iPad mini (5th generation)
iPad mini 4
iPad Air (3rd generation)
iPad Air 2
If you have one of the models above iPad (with iPados) and Mac (with Macos Catalina), the characteristic of the side should work without problems.
If devices cannot be connected with each other, you will have to take into account other requirements for the sidet.
Connectivity
For the sidecar to work, the connection between a Mac and an iPad can be done either by Bluetooth, either using Lightning data cable or USB-C. In the case of a Bluetooth connection the distance between the two devices It does not have to be greater than 10 meters. For cable connections, make sure they are of good quality. Preferably to be original cables or MFI.
iCloud Account
A requirement that the mirroring between the iPados and the macos Catalina is possible, and the functional side is that both devices to be connected to the same iCloud account.
iPad does not appear in the list of airplay devices
Normally, iPad must appear in the list of Airplay devices in Menu Bar. If you do not find the iPad there, go to Mac in Setting → Sidecar → Click on "Devices" under "Connect to" and select your iPad
Sidecar does not work with all applications
You can open Final Cut Pro, Adobe Illustrator, CorelDRAW, Cinema 4D or Maya On Mac and work by sidecar on iPad, using the Touch Screen or Apple Pencil facilities. But not all applications are compatible with sidecar.
I would say that the great absence of Sidecar is Adobe Photoshop. Apple Pencil turns iPad into a true graphic tablet, and in Photoshop you could create interesting images with sidecar.
Most likely until autumn, when the official launch for iPados and Macos Catalina is scheduled, other compatible applications will be added.
