While running the Exchange Hybrid Configuration Wizard, you may encounter error 1603 in the Install Hybrid Agent section and you may witness that the operations are cancelled after this error.
Exchange Server Hybrid Configuration 1603 Connector Error
Connector registration failed: Make sure you are a Global Administrator of your Active Directory to register the Connector. Error: '”The registration request was denied. “'
How to Fix Hybrid Configuration Wizard Error 1603
Of course, after this error, I immediately checked my DNS configurations and proved that there was no problem with the DNS.
The server where I had the error was Windows Server 2016, I performed the same operations on my Windows Server 2019 server and the Hybrid Configuration Wizard configuration worked without any problems. All my servers are running the latest version of their versions.
Then I suspected TLS versions, because the default TLS versions are different between 2016 and 2019 servers.
After adding the regedit records I shared below to my 2016 server, I rebooted my server and the Hybrid Configuration Wizard worked without any problems on my 2016 server.
[HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NETFrameworkv2.0.50727] “SystemDefaultTlsVersions” = dword:00000001 “SchUseStrongCrypto” = dword:00000001
[HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NETFrameworkv4.0.30319] “SystemDefaultTlsVersions” = dword:00000001 “SchUseStrongCrypto” = dword:00000001
[HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoft.NETFrameworkv2.0.50727] “SystemDefaultTlsVersions” = dword:00000001 “SchUseStrongCrypto” = dword:00000001
[HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeMicrosoft.NETFrameworkv4.0.30319] “SystemDefaultTlsVersions” = dword:00000001 “SchUseStrongCrypto” = dword:00000001
[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2]
[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client] “DisabledByDefault”=dword:00000000 “Enabled”=dword:00000001
[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server] “DisabledByDefault”=dword:00000000 “Enabled”=dword:00000001
You can access the PowerShell Script I prepared for TLS Configuration below.
Exchange Server 2019 TLS Configuration – Cengiz YILMAZ
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