To specify the maximum number of seconds that Defender's ISAPI Agent waits for an idle user session before requiring the user to re-authenticate, use Registry Editor on the computer running the ISAPI Agent to create (or modify if the value already exists) the following registry value:
Registry key: HKLM\SOFTWARE\PassGo Technologies\Defender\Defender ISAPI Agent
Value type: REG_DWORD
Value name: IdleTimeout
Value data: number of seconds
The value data specifies the maximum number of seconds that the ISAPI Agent waits for an idle user session. For example, the value data of 900 sets the idle time-out to 15 minutes.
After you have changed this setting, restart Internet Information Services (IIS) on the computer running the ISAPI Agent (for example, by executing the iisreset command).