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IaaS vRealize Automation Installation Issue : An existing connection was forcibly closed by the remote host

I recently encountered issue in the installation IaaS component of vRealize Automation 6.2.1. Normally, you just run the pre-req automation PS1 script, execute the IaaS installer and you’re all set. But for this instance, I keep receiving the below error:

 System.Data.Services.Client.DataServiceTransportException: The underlying connection was closed: An unexpected error occurred on a send. —> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. —> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. —> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host

I’ve tried doing Custom Install but still the same.

The IaaS Server is running Windows Server 2k12 R2 and a remote MSSQL 2012.

Looking around the interwebs, I found the following post

http://www.storagegumbo.com/2014/09/install-gotcha-vcac-windows-server-2012.html

It talks about vCAC in Windows 2012 having issues with Guagent. Although it’s a different issue, from the log entries in Windows event viewer the system error (Schannel Fatal Alert 40) is pointing to the same solution: Disable TLS 1.2

So went ahead and download the IISCrypto to disable TLS 1.2.. and voila  — it worked 🙂

Link for IISCrypto : https://www.nartac.com/Products/IISCrypto/Download

 

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