iPAD updated to IOS 15.0

After any iOS/iPadOS upgrade/update, you should ALWAYS perform a simple hard reset of your Apple mobile device.

For older iPad models with a Home button, do a simple hard reset of your iPad by holding down both the Home and sleep/wake/power button simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons.

OR

For much newer, larger screen iPad models, without a Home button, try the new simple hard reset procedure for the new 2018/2020/2021 iPad Pros and the 2020 iPad Air 4 models.

1. Press and release the volume up button.

2. Then immediately press and release the volume down button.

3. Then, press and hold the single sleep/wake/power button You will see the Slide to Power off button, but keep on holding down the power button until you see the Apple logo, then let it go.

Once you have performed all the steps, wait for a few seconds and your 2018 iPad Pro will boot up completely to the iPad Pro’s Lock screen.

Best of Luck to You!

Same here and I'm trying this on an iPad Air 2019... (Right now I'm typing on a laptop that uses the same WiFi network and has no problem at all connecting!) On the other hand: the other iPad in house is an iPad Pro 2021 with exactly the same problems with the WiFi network! Resetting a working WiFi-router is no solution since I've got someone in a conference call right now and 2 students doing their homework (and needing WiFi up and running!). So, for that I would have to wait till the middle of the night or something to 'kill' working connection even if it's only for a couple of minutes... #unhappycustomer

Try a simple reset of your MODEM/router, by unplugging the box from power for 15-20 seconds, or so.

Then, re-plug into power and let the MODEM re-cycle itself.

Good Luck!

If your using a VPN app?

I had problem also. I finally called support.

I had to UNINSTALL VPN app.

then reconnected to WiFi under settings and it worked. Hope this helps