i have updated to ios9 and after the update i have to sign in and it says could not sign in

Hello Sumad,

Thanks for using Apple Support Communities.

If you are being prompted to sign in with your Apple ID after updating, and the password is not being accepted, then you might be entering the incorrect login information. To reset your Apple ID password please follow the directions in the link below.

If you forgot your Apple ID password - Apple Support

Take care.

Hey even after the password change it takes you till you accept the T&C and says could not sign in.

If it's the issue with the password you wouldn't get that far it will prompt a message Invalid Password.

Can anyone share a solution if available?

Me too it goes to sign in forever. Sorry to say bad world 'JUNK' period.