I can't remember my passcode for Apple iPad air

Try these procedures.

https://drfone.wondershare.com/reset-iphone/reset-restrictions-passcode-on-iphone.html

That's very odd.. You are sure you didn't put the code in wrong or remembered it incorrectly?

If you forgot the code to your iPad you may have to reset it to factory defaults by plugging it into your PC unless you have a backup you can restore.

Well, when you first set up your IPad you had to create a passcode to get in. If you can remember what your passcode is click the link here and reset it. Forgot passcode for your iPhone iPad or iPod touch or your device is...

The following can be done on ipad with iOS 8:
1. Press the home button( the round button on the front side of your ipad), to go to the home screen.
2. Find the Settings icon ( looks like gray clockwork gears) and tap on it to launch the Settings app.
3. After settings app is started try to find on the left side of the screen Passcode ( has a red lock icon near the text) and tap on it
4. In the passcode setting screen you can choose the type of passcode with the Simple passcode setting switched on or off ( simple means a 4 digit number, not simple means any character combination
5. By taping on Turn passcode on you can enter your passcode. Be carefull not to forget your passcode, otherwise you will not be able to use your ipad later.

It's usual for us to forget the passcode, however, there are several ways to reset the iPad password. Just follow one of them shown below.

If you've neither synced with iTunes nor set up Find My iPhone in iCloud, you'll need to wipe your iPad to factory setting to remove the password, which means you'll suffer losing all your data on iPad and get it as a new one.
Please pay attention there is a slight difference in putting different models of iPad into recovery mode.
iPad Air

• 1. Turn off your iPad Air, press and hold the Home button.
• 2. While holding the Home key, connect the USB cable to the device. Wait until the Apple logo appears and keep holding the Home button for few more seconds.
• 3. Continue holding the Home button until the iTunes logo appears.

iPad mini/iPad pro

• 1. Connect your iPad to your computer or laptop and open iTunes.
• 2. While your device is connected, force to restart it.
• 3. Press and hold the Sleep/Wake and Home buttons at the same time. Don't release when you see the Apple logo. Keep holding both buttons until you see the recovery mode screen.

Now you have entered the recovery mode, and

1. When you see the option to Restore and Update, click it.

2. Wait for the process to finish. Then you can set up and use your device.

For more methods, check: How to Unlock iPad?

The solution to this problem will result on the deletion of all data. Turn off your iPad, then, connect your iPad to your computer while pressing and holding the home button. Let go of the home button when your iPad says, "Connect to iTunes," and then restore using iTunes.

http://support.apple.com/kb/ht1212

If you don't remember setting up a passcode on your ipad, maybe someone else did, and then entered the wrong passcode more than six times, resulting in a disabled ipad.
In the link above you will see instructions on how to deal with this problem, which pretty much boil down to connecting your ipad to itunes and restoring from a previous backup that you may have saved.
If you never created a backup, you can still reset and wipe your ipad from itunes, resulting in everything being erased, but at lease giving you back full use of your ipad.

Good luck!

If your son cannot remember the passcode, you will need to restore your iPad using the computer you last synced your iPad with. Using the last computer you synced with allows you to reset your passcode and re-sync all your data, apps, etc.


To begin the process, connect the iPad to your computer using the USB cable or lightning cable. Open iTunes and select the restore option.

If you restore on another computer, you can still unlock the device and remove the passcode, but your data and apps will be wiped.


Hope that helps!

If you cannot remember the passcode, you will need to restore your device using the computer with which you last synced it. This allows you to reset your passcode and resync the data from the device (or restore from a backup). If you restore on a different computer that was never synced with the device, you will be able to unlock the device for use and remove the passcode, but your data will not be present.http://support.apple.com/kb/HT1212

For restore instructions, see this: http://support.apple.com/kb/HT1414

Unfortunately, you're a bit stuck. The only way of removing a passcode without knowing it is to restore from an iPad backup when the passcode wasn't applied.
My advice would be to take it to an Apple Store, and explain the situation. They're always very helpful, and may be able to do something about it.
Hope that helped!