It’s Patch Blues-day for Outlook: Microsoft’s email client breaks worldwide after dodgy software update

Admins sent scrambling as latest patch blamed for crashes

Microsoft’s desktop email client Outlook has stopped working worldwide for countless users, whether they are using it with an on-premises Exchange server or with the Office 365 cloud.…

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Source: Theregister.co.uk/security / Article: "It's Patch Blues-day for Outlook: Microsoft's email client breaks worldwide after dodgy software update"