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Today I learned that Excel incorrectly assumes 1900 was a leap year, and Microsoft will never fix it because the whole house of cards would collapse

By ValhalladiddeApril 8, 2026

Nestled away amongst a pile of recently updated pages on Microsoft’s Learn site, which contains product documentation and technical resources,…

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Microsoft launches Copilot AI function in Excel, but warns not to use it in ‘any task requiring accuracy or reproducibility’

By ValhalladiddeAugust 23, 2025

Certain Windows 365 Copilot users now have access to a new feature in Excel that lets you use Microsoft’s Copilot…