Customer with environment setup -
BizTalk Server 2016, Feature Pack2
Everything was in Azure
High availability 9 SQL servers
Was getting the Error in installer - 'failed to check if database exists' in spite of having all required permissions.
The TLS 1.0 in the registry needs to be enabled for the Database to be installed.
This was enabled both in the Server where BizTalk360 was installed and the SQL server as well. Also the SQL server service was restarted.
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0] [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.0\Client] "Enabled"=dword:ffffffff "DisabledByDefault"=dword:00000001