Active Directory Windows Server 2025 not Authenticate Users

Hi Masoud Hemmati ,

Thank you for reaching out to the community, may we know what was the last version you used? 

Hi

Thank you for Reply . yes i upgraded UTM to Version 21

And on UTM 9 the active directory windows server 2024 authenticated users perfectly fine ?

My Appliance is Sophos XGS 2300 with SFOS 21 

Hi Masoud Hemmati , could you please log a service request and provide me the case id here, we'll expedite the given siuation with the support team...

Hello, I found the solution. The following changes must be made in the Active Directory server in the domain controller policies.

Default Domain Controller Policy > Computer Configuration > Policies > Windows Settings > Security Settings > Local Policies> Security Options
1. Domain member: Digitally encrypt or sign secure channel data (always) —> None
2. Domain controller: LDAP server signing requirements —> None