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The early alpha builds do not have a registry, thus I wonder what build was the first to include registry?

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    I did not know that early builds didn't have a registry, thanks!
    – davidbak
    Jan 12, 2022 at 20:49

1 Answer 1

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Build 196 (the first release outside Microsoft, September 1991) doesn’t use the registry, although it does create a C:\REGISTRY directory when running.

Build 297.1 (the first public beta, July 1992), compared to build 239 (December 1991), drops REG.DAT (which is presumably a Windows 3.1-style registry) and adds the registry editor (REGEDIT.EXE) and a REGISTRY.INF which is probably registry-related. So the Windows 3.1-style registry was added somewhere between builds 196 and 239, and the NT-style registry somewhere between builds 239 and 297.1.

Build 404.1 (the second public beta, March 1993) adds REGEDT32.EXE.

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