INSUBCONTINENT EXCLUSIVE:
Microsoft KB 4458166, released on Tuesday, explains that the push to Win10 version 1803 has been halted for machines running .Net
applications that use the TLS 1.2 security protocol
Presumably, effective Tuesday, if you have a Win10 1709 or 1703 machine that running one of those programs (including, notably, QuickBooks
Desktop), Microsoft won''t try to push 1803 on it.