Microsoft has suspended all optional Windows updates for December because many of its staff will be on holiday for Christmas and New Year. Writing online , the company said "preview releases" will resume in 2021. Preview releases are updates that arrive after the compulsory security updates released on the second Tuesday of each month (informally called Patch Tuesday). They are optional updates, meaning you don't need to install them. They normally contain non-urgent security fixes and updates for Office tools. December's Patch Tuesday (on 8 December) will go ahead as scheduled, but all other updates have been cancelled until 2021.
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