Microsoft Patches iSCSI Boot Blunder: Windows Server 2025 Back on Its Feet!
Microsoft has fixed a “boot device inaccessible” issue on Windows Server 2025 systems using iSCSI. The bug crashed servers during startup but was resolved with a February update. If your server was playing dead, it might just need a little software CPR courtesy of Microsoft’s latest patches!

Hot Take:
It seems like Microsoft is playing a game of whack-a-mole with these pesky bugs in Windows Server 2025. Just when you think they’ve squashed one, another pops up! But hey, at least they’re keeping IT admins on their toes and giving us something to talk about at the watercooler. Who needs a dull workday when you’ve got boot device errors to spice things up? And don’t even get me started on the USB audio and camera issues. It’s like Microsoft is throwing a never-ending surprise party, and nobody knows what glitch is going to pop out next!
Key Points:
- Microsoft fixed the “boot device inaccessible” error on Windows Server 2025 systems using iSCSI.
- The issue primarily affected servers operating under NDIS Poll Mode booting from an iSCSI LUN.
- Resolution came with the February 11, 2025 update (KB5051987), which also addressed USB audio and camera bugs.
- Microsoft tackled other bugs in November and December, including BSOD issues on high core count devices.
- Windows Server 2025 reached general availability in early November, with new features like hotpatching and SMB over QUIC.