Nobody Expects The Server 2025 Update! It’s Chief Weapon Is Surprise …

Source: The Register Nobody Expects The Server 2025 Update!  It’s Chief Weapon Is Surprise …

Block KB5044284 Immediately Unless You Want A Shock To Your Server

Microsoft have made a wee bit of an oopsie, labelling an entire OS upgrade as a security update.  It turns out that KB5044284 is not a minor update, it is the full upgrade package to move your server to the brand new Windows Server 2025 operating system.  Having a server OS suddenly change is a great way to ruin a sysadmin’s day, generally they prefer to ensure that the OS is thoroughly vetted before applying it to their servers.  If the update does indeed break something mission critical, it will take a complete rebuild of an effected server to restore services, and that means serious down time.

You should immediately block KB5044284 from applying to your infrastructure unless you like to live dangerously.  This was first reported by Heimdal Security who found around 7% of their servers had been updated to Server 2025.  If you don’t want to see something similar greeting you on Monday you’d best get blocking!

The Register has contacted Heimdal for more information and will update this piece should the security organization respond. We also asked Microsoft to comment almost 24 hours ago. Since then? Crickets.

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Jeremy Hellstrom

Call it K7M.com, AMDMB.com, or PC Perspective, Jeremy has been hanging out and then working with the gang here for years. Apart from the front page you might find him on the BOINC Forums or possibly the Fraggin' Frogs if he has the time.

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