Office 365 outages due to "routine maintenance"![](https://eu-images.contentstack.com/v3/assets/blt07f68461ccd75245/bltd2d132006c8c08dc/661951e60ce8d7155d6a7102/atsymbcircuit_0_0_4.jpg?width=700&auto=webp&quality=80&disable=upscale)
Microsoft 365![](https://eu-images.contentstack.com/v3/assets/blt07f68461ccd75245/bltd2d132006c8c08dc/661951e60ce8d7155d6a7102/atsymbcircuit_0_0_4.jpg?width=700&auto=webp&quality=80&disable=upscale)
Office 365 outages due to "routine maintenance"Office 365 outages due to "routine maintenance"
I wonder whether the "routine maintenance" issue that affected Office 365 today, including Exchange Online, was a symptom of some of the preparatory work that Microsoft needs to do for the forthcoming migration to the Wave 15 set of products.
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