Cannot log in to Admin UI ​Error: For input string: "9223372036854775807"

Document ID : KB000102682
Last Modified Date : 11/07/2018
Show Technical Document Details
The following error is observed by certain Admins when accessing AdminUI

Error: For input string: "9223372036854775807"
The value "9223372036854775807"(0x7FFFFFFFFFFFFFFF) seems to be the users value in the "accountexpires" attribute in Active Directory. 

Wikipedia quotes( 

The number 9,223,372,036,854,775,807, equivalent to the hexadecimal value 7FFF,FFFF,FFFF,FFFF, is the maximum value for a 64-bit signed integer in computing. 

The value set is valid, based on Microsoft documentation: 

Disable Flag needs to be used strictly by Siteminder and nothing else. The Error message was a result of an Admin setting up the AD account Expires Attribute as Disabled Flag, which is incorrect.