We keep receiving below error, this is happening for all the users. We are in exchange 2013 sp1.

Log Name:      Application
Source:        MSExchange ADAccess
Date:          4/13/2015 8:35:09 AM
Event ID:      4023
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:     abcd.nt.contoso.com
Description:
Process w3wp.exe (AirSync) (PID=21152). The budget for user 'Domain\User_androidc_MotoDROIDRAZRHD' is locked out until 4/13/2015 3:10:09 AM.  Max Burst: 450000, Recharge Rate: 675000, CutoffBalance: -1125000

Thanks for sharing.

Hi,

Thanks for reply, this event generating randomly for random users..we can provide solution if this is happening for particular users.