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: While it runs on Windows 10, some users prefer running it in compatibility mode if they encounter stability issues. Installation Steps

Note: Arm occasionally changes URLs. If the link fails, go to Keil.com → Support → Downloads → "Older Versions" (at the bottom).

Corrupted .uvopt (options) file. Fix: Delete the .uvopt and .uvgui files in your project folder. Keep only .uvproj . Reopen—μVision will regenerate the options.

After installing MDK 474, immediately copy the C:\Keil\ARM\ARMCC folder to a network drive. This ensures your entire team uses the exact same compiler version, eliminating "works on my machine" issues forever.