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With the move to myVCCS, there is only one instance where an account is locked or seems to be locked.
The user encounters an error message in myVCCS. "This account has been locked due to multiple authentication failures."
This is caused when a user or a user device(s) enters a password incorrectly 50 or more times. Only resetting the password using the Forgot password self-service reset tool or an administrative password reset will remove this lock, although it will time out after 15 minutes. The main cause is a user not changing a recently updated password on a mobile device and the device attempting to sign in automatically. Note that if the device is still configured with the wrong password, the account will quickly lock again, so disabling the account on the device may need to be done first.