Within my blog post Windows 10 V1803 rollout stopped due to TLS 1.2 issues I reported a specific issue with Windows 10 V1803 and applications that require TLS 1.2 (mostly on Intuit books). Microsoft has even suspended the rollout of this version of Windows 10 because of the error on these machines. Apparently KB4458166 update is now available to fix this problem. I have added details within the linked article.