If you are using the Windows NT/SAM User Authentication connector in either Titan FTP Server or Cornerstone MFT Server, you may experience an issue where the NT Groups begin to vanish from the Admin Console.


You may also experience an issue in the New Group Wizard where no Windows NT/SAM Groups appear, or you receive an error of "Item Not Found".


The reason for this is related to a recent Microsoft Windows Security Update which was released by Microsoft as part of the weekly patch rollout for Windows in July of 2019. In order for Microsoft to fix a known security vulnerability, they made a change to the way 3rd party software accesses Windows NT AD systems.


The 2019, build 3538 release of Titan and Cornerstone have a workaround for this issue, follow this procedure to address the issue.


FOR TITAN CUSTOMERS:
You'll want to make sure you have the latest build of Titan installed, Titan v2019 build 3538 or later, and then follow these instructions to apply the workaround until MS fixes the problem.

1. Run RegEdit and go to HKLM\Software\South River Technologies\South River Technologies\Titan FTP Server\Servers\

2. under there will be an entry with the server ID, probably 2 (or 3, or there will be multiple serverIDs)

3. Under each ServerId, add a new String value named 'AuthNoNetQuery' and set the value to '1'

4. Close RegEdit and restart the OS

Once the OS has restarted, go back in to the Admin console under groups -> Add new group and see if the groups are listed.


FOR CORNERSTONE CUSTOMERS:


You'll want to make sure you have the latest build of Cornerstone installed, Cornerstone v2019 build 3538 or later, and then follow these instructions to apply the workaround until MS fixes the problem.

1. Run RegEdit and go to HKLM\Software\South River Technologies\South River Technologies\Titan FTP Server\Servers\

2. under there will be an entry with the server ID, probably 2 (or 3, or there will be multiple serverIDs)

3. Under each ServerId, Check the name of the DSN used to connect to the database.

4. Close RegEdit


5. Run the "DATA SOURCES" applet in Windows and look for the Data source being used by Cornerstone. Specifically you want to find the name of the Sql Server and Database.


6. Using SSMS, connect to the Sql Server and open the database. Find the sr_serverparams table and Edit All Rows.


7. Insert a new row at the end for the specified ServerId, the rowtag will be "AuthNoNetQuery" and the rowval will be "1" 


8. Close SSMS and restart the OS.


Once the OS has restarted, go back in to the Admin console under groups -> Add new group and see if the groups are listed.