backup now greyed out

Greetings gururaj258,

Thanks for posting in the Apple Support Communities.

We understand you're looking to back up your device in iTunes, but can't seem to get the option to be available, right?

If we have that correct, let's have you give the steps below a try to see if they'll clear this up. These steps typically take care of similar occurrences like the one you're experiencing, and you can locate additional steps here: If you can't back up your iOS or iPadOS device to a computer or restore it from a backup - Apple Support

Try again after each step 

1. Make sure your Mac or PC is up-to-date. If you're using iTunes, make sure that you have the latest version of iTunes.

2. Connect your device to your computer with a USB cable, and locate your device on your computer. If your device doesn't appear in Finder or iTunes, learn what to do. If you forgot your passcode or your device is disabled, learn what to do. 

3. Restart all your devices.

4. If you use a Mac, skip this step. If you use a Windows PC and iTunes won't respond or your backup never finishes, you might need to update, change, disable, or uninstall your security software.

5. If you own more than one computer, try to make a backup on your other Mac or PC. Or, use iCloud to back up your device and restore from your iCloud backup.

6. If you see an alert that says an error occurred, your backup is corrupt or incompatible, or there's not enough disk space, find your error message below to learn what to do next.

7. Contact Apple Support.

Let us know if those steps help to clear this up for you. If not, confirm which steps you've taken so far along with the results so we can gain a better understanding of what could be occurring. We'll use these details to provide the best next steps to take.

Have a great day!

See About the 'Trust This Computer' alert on your iPhone, iPad, or iPod touch - Apple Support and reset your trust settings so that you can trust the computer and allow iTunes to make backups.

Change your settings for trusted computers

Your device will remember the computers you've chosen to trust.

If you don't want to trust a computer or other device anymore, change the privacy settings on your iPhone, iPad or iPod touch. Go to Settings > General > Transfer or Reset [Device] > Reset > Reset Location & Privacy. Now when you connect to formerly trusted computers, the Trust alert will ask you whether you trust that computer. 

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