AADConnectProvisioningAgentSetup.exe Error 0x80070643: Failed to execute MSI package

Hi,

I am trying to install Cloud Sync (Microsoft Entra Connect). (AADConnectProvisioningAgentSetup.exe)
Unfortunately, the installation aborts immediately with an Error 0x80070643:
[0D10:1A44][2026-10-01T22:51:45]e000: Error 0x80070643: Failed to install MSI package.

OS: Windows 2022 Essential Server / German. With the newest Patches installed. (OS Build 20348.5622.)

Microsoft Windows Server 2022 Standard (Version: 10.0.20348)

• .NET Framework Release: 528449
• TLS 1.2 Client (SChannel): Registry-Pfad existiert nicht (Standardeinstellung des OS greift)
• .NET Strong Crypto (64-Bit): activated
• .NET Strong Crypto (32-Bit): activated

In the log i found following :

ExecSecureObjects: Error 0x80070534: failed to get sid for account: BUILTIN\Administrators

In our AD the Group Called "BUILTIN\Administratoren" instead of "BUILTIN\Administrators"

• We also installed the english Language Pack, on this Server, with no luck. Same Problem.
• So i add an additional Global Group in the AD Call BUILTIN\Administrators which is member of "BUILTIN\Administratoren" - Also with no luck. Any help is appreciated. Thanks in advance
  Silvan