The Windows 10 login password went amiss for Albert Pye and about a dozen others who wrote to me saying they couldn’t log into their PCs. In every instance they had not touched their computer nor changed anything, yet all of a sudden their password or PIN was incorrect.
Microsoft hasn’t acknowledged it specifically in its update log, so that makes me think it’s a strange brew of circumstance and hardware/software malfunction, perhaps some problem with the installation of an update. These workarounds could help you.
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