Authentication failed. 1331
AD account is disabled
Authentication failed. 2239
AD user account is expired
Authentication failed. 2240
AD accounts "Log On To" do not permit a logon.
(If using "Log On To" with specific computers also add TPAMCONSOLE to allow login)
Authentication failed. 2241
AD accounts "Logon Hours" do not permit logon.
Authentication failed. 1326
Incorrect AD password / AD user does not exist. Ensure the AD user does exist and their are no extraneous leading or trailing spaces in the external authentication UserID field.
Authentication failed. 1909
AD Account is locked out
Authentication failed. 53 or Authentication failed. 67TPAM is unable to communicate with the WinAD server, more troubleshooting for this error is available
here