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Issue with duplicate DNS fix when DC's mix uppercase/lowercase
So, in a recent KB fix included in: https://support.microsoft.com/en-au/help/4541329/windows-10-update-kb4541329 It is supposed to solve: Addresses an issue that might cause domain controllers ...
Ok, looks like an almost year old cumulative update. May want to get current by installing the latest SSU
https://www.catalog.update.microsoft.com/Search.aspx?q=KB4540723
followed by the latest cummulative update.
https://www.catalog.update.microsoft.com/Search.aspx?q=KB4541329
FYI, installed perfectly after being sure to install the previously mentioned update before the cumulative.
Everything great across the domain now, thanks again so much for taking a minute to assist!
More good news, you're welcome.