My iPad refuses to backup. What do I do?

Have you looked up this one?

https://support.apple.com/en-us/HT203516

Also have you tried doing a reboot of the iPad either shutdown/restart normally or via the “hard restart” option explained online? https://support.apple.com/guide/ipad/restart-ipad-ipad63d30b5a/14.0/ipados/14.0

Also you can go to General Settings and do a Network Settings Reset

https://support.apple.com/guide/ipad/return-ipad-settings-to-their-defaults-ipad9a74dc01/ipados

You need to setup WIFI and Bluetooth devices after that, unfortunately.

Good luck.

How much storage space do you have left on your iPad if you go to general in settings and iPad storage? How much storage do you have left an iCloud? Have you tried backing up to make a hardcopy in iTunes or find her in Catalina or above?

I remember I’ve seen this error message on my device when I tried to backup using a hotspot/tethering my iPad to my iPhone. It would not backup.

Is it happening in every WIFI you try? Have you tried at another location / different WIFI access point? Is the WIFI router maybe setup to prevent from UPnP i.e. on very high security settings?

Hvp21 wrote:

What do I do?

Well, for starters, you should give us much more information.

Writing an effective Apple Support Commun… - Apple Community

Hopefully your iPad is plugged in to power and on a strong Wi-Fi signal when attempting the backup.

Are you using some anti-virus, VPN or similarly restricting product or method? Is your Wi-Fi possibly restricted by an employer or education institution?

Until you can get to back up my iCloud why don’t you make a hardcopy on your computer via iTunes or finder