Hi Mehmet,

I tested things out and was not able to reproduce the issue you described.

If I check the box for SASL authentication and save it, it stays checked if I go back into that LDAP configuration again.

Can you confirm what version of LabKey you're running? When I did my test, it was on the latest version of LabKey (21.11), so if you're on an older version, you can try to upgrade and see if the same problem appears.

Regards,

Jon