Controller disconnecting continuously

Having the same issue with two controllers; it's probably not your controller. Details here:

forums.xbox.com/.../1627064.aspx

Sadly this did not work either. Both controllers continue to disconnect.

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

Since this is happening with multiple controllers let’s then try resetting the console keeping games and apps. Don't worry because as long as you're connected to Xbox Live your saved progress, games, will not be deleted. It will remove all of your accounts but you can add all of them later on.

Press the Xbox button to open the guide.

Select Profile & system > Settings > System > Console info.

Select Reset console.

Reset and keep my games & apps.

If that didn’t work, I would like to ask, are there any 5G mobile data connection that is turned on when the issue occurs?

is extremely common, my understanding its wifi interference. This thread will most likely be closed in no time, there has been many forum post like yours and they just get directed to some troubleshooter which will not fix the issue.

here is a forum that has 137 pages of info,
forums.xbox.com/.../1825293.aspx

The recent Xbox System update caused black screen hanging, usb issues, lagging, haywire and freezes- its the update, is DUFF or possibly even corporately sabotaged, or temporarily scuppered to instigate a percentage of new hardware purchases.