Microsoft fixed more than 40 vulnerabilities in its products Tuesday, including critical ones in Windows, Internet Explorer, Edge and Office.

The vulnerabilities are covered in 16 security bulletins, six of which are marked as critical and the rest as important. This puts the total number of Microsoft security bulletins for the past six months to more than 160, a six-month record for the past decade.

Companies running Windows servers should prioritize a patch for a critical remote code execution vulnerability in the Microsoft DNS Server component, covered in the MS16-071 bulletin.

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