It's time to make sure your computer is locked down. If history is any indication, we're going to be in for a rocky ride over the next week or two.

In September, folks who were set to update Windows automatically were greeted by Word docs and Excel spreadsheets that wouldn’t display merged cells, switched languages and intentionally broke one-click printing on custom forms. In October, admins who let patches go through automatically were greeted by oceans of blue screens and failures in Microsoft’s own Dynamics CRM. Last month, every version of Windows was hit with a patching bug that blocked Epson dot matrix printers — and those who had told Win10 Creators Update to wait to upgrade found themselves “accidentally” upgraded to Win10 Fall Creators Update, version 1709.

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