Objective:
Enabling TLS 1.2 as default in windows.
Resolution:
- Close Oasis montaj if open.
 - Launch the Registry Editor.
 - Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319
 - Right-click – New -> DWORD (32-bit) Value

 - Set the Name to SchUseStrongCrypto Set the Value to 1

 - Launch OM and try again
 
NOTE: Please be aware that this change might affect other applications on your system.