Microsoft is celebrating 11 years of the Windows Insider Program with custom desktops and - maybe - a secret hint for users wondering which operating system to consider.

The software vendor uses the Windows Insider program to try out unreleased versions of its flagship operating system on its army of unpaid testers. It was first opened by then-Windows supremo Terry Myerson in 2014 and initially headed by Gabe Aul.

Aul departed after a few years (he now works at Meta) and was replaced by Dona Sarkar. The Windows Insider Program evolved to include ninja cat mascots and taco hats , though critics questioned whether testing actually improved outcomes.

Over the years Insiders have flagged serious issues — sometimes to no avail. Take for example, the catastrophic Windows 10 October 2018 Updat

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