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Microsoft is no longer pushing version 1803 onto machines that have TLS 1.2-dependent apps installed
Microsoft is no longer pushing the Win10 1803 update to systems that have TLS 1.2-dependent apps installed, including those with Intuit QuickBooks Desktop.
Per @Abbodi86:
New .NET side issue
https://support.microsoft.com/en-us/help/4458166/applications-that-rely-on-tls-1-2-strong-encryption-experience-connectWe have temporarily suspended offering the Windows 10, version 1803 update to customer systems that run applications for which this is known to be an active problem.
It affect all .NET versions upto 4.7.2