Windows 1.0 no longer receives security updates
Support for this version has ended (December 31, 2001). These guides can still help you set up or repair a computer, but where you can, keep it off the internet for banking and email, and plan a move to a version that is still supported.
Guides for Windows 1.0
2 guides. Start with the one that matches what you want to do.
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How-to
Windows 1.0: how it was installed and how to run it today
Windows 1.0 was installed from floppy disks on MS-DOS in 1985; this guide walks through running it today in DOSBox-X with a copy you own.
Windows 2000 and older
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Fix
Windows 1.0: running programs and fixing common problems
What came with Windows 1.0, how to start programs from the MS-DOS Executive, and fixes for mouse, display, memory and slowness problems in an emulator.
Windows 2000 and older