POsting this for others who encounter my issue, I'd found a workaround for adding my Win11 22H2 laptop to the Samba 4.15.X AD and for logging into the computer as a domain user. That entailed modifying Local Security Policy> Local Policies> Security Options> Network security: Configure encryption types allowed for Kerberos Check only DES_CBC_CRC and DES_CBC_MD5. This worked for those two functions.
The reason the problem opening AD tools and getting user listings from my Win11 box was that I hadn't reversed that change when I upgraded to Samba 4.16.X. I did so and now everything works flawlessly. Thanks all.
POsting this for others who encounter my issue, I'd found a workaround for adding my Win11 22H2 laptop to the Samba 4.15.X AD and for logging into the computer as a domain user. That entailed modifying Local Security Policy> Local Policies> Security Options> Network security: Configure encryption types allowed for Kerberos Check only DES_CBC_CRC and DES_CBC_MD5. This worked for those two functions.
The reason the problem opening AD tools and getting user listings from my Win11 box was that I hadn't reversed that change when I upgraded to Samba 4.16.X. I did so and now everything works flawlessly. Thanks all.