In order to be compatible with VMWare vCenter Converter 6.2 and above, ADVL (and thus .NET 4.5) needs to be configured to not use TLS 1.0. Instead; It should use TLS 1.1 or 1.2 and Strong Crypto by default. You can accomplish this by following the instructions in the following Microsoft article:
https://docs.microsoft.com/en-us/mem/configmgr/core/plan-design/security/enable-tls-1-2-client#configure-for-strong-cryptography
Or, if you are running RMAD on Windows Server 2012 R2 or later, or Windows 8.1 or later, you can simply apply the modifications needed for ADVL (and .Net 4.5) by following these steps to modify the registry on the ADVL server:
NOTE: Windows Registry Disclaimer: Quest does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.
- Copy the file attached to this KB article to your ADVL server’s desktop
- Change the file extension from .txt to .reg
- Right-click on the file and choose “merge” from the pop-up menu
- On the Warning message, Click “Yes”
- On the Informational message (saying it was successfully added to the registry), click “Ok”
- Restart the ADVL console
These registry changes allow .net 4.5 to use TLS 1.1 or 1.2 (not 1.0), and instruct it to use the OS defaults (which on a patched Windows Server 2012 R2 or later is TLS 1.2).
To manually modify the registry:
- Open Regedit
- Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319
- Create DWORD with the name SchUseStrongCrypto and value of 1
- "SystemDefaultTlsVersions"=dword:00000001
- Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework\v4.0.30319
- Create DWORD with the name SchUseStrongCrypto and value of 1
- "SystemDefaultTlsVersions"=dword:00000001