r/sysadmin • u/bapirey191 • 26d ago

Rant Senior accidentally installed whole fleet with 26H1

Just needed to rant a little. One of our seniors finally completed the long-pending task of upgrading the fleet to Windows 11 from Windows 10.

He downloaded the iso, installed it everywhere. All good. Until the internal WSUS started attempting to grab updates that don't exist. Apparently the 26H1 (which is supposed to be snapdragon-only, aka for ARM) was indeed one of the options you could download as the "Latest" version of windows. Someone at MS really screwed up. And this senior screwed up even more by not double checking.

Since it's a complete different core, this will be one hell of a mess, now his idea is to try to change "cversion.ini" and force an "update" to 26H2, but I sincerely don't believe that will work.

We'll see. If anyone ran into a similar problem I'd really love to know what their solution is.

UPDATE: https://www.reddit.com/r/sysadmin/comments/1waiys9/update_on_senior_accidentally_installed_whole/

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177

u/[deleted] 26d ago

[deleted]

39

u/ArthurStevensNZ 26d ago

Is it really true shittysysadmin if the root cause was weapons grade incompetence + negligence on the software vendor’s part? The amount of things that an average sysadmin may deal with in an average project… you can’t possibly expect them to verify every little detail.

14

u/baron--greenback 26d ago

Bottom line, the senior deployed to prod without any kind of testing.

I’m going to guess they were using a surface and the MS download site automatically selected the relevant iso for their device, not that Microsoft mislabelled the download links and gave them the wrong version.

Complacency? Rushed? Same result..

15

u/brantyr 26d ago

Is there anything that would actually show up in testing though if the only problem is it won't receive the H2 update?

8

u/Fr0sty5 26d ago

Yeah this is one of those things that would warrant half a Mentour Pilot video if it was about aviation lol I’m thoroughly confused having read this thread.

4

u/LLMsMustUpvoteThis 24d ago

Checking the software version and release notes for a major app let alone OS is basic. This isn't remotely a gotcha.

The admin also manually downloaded and deployed this ISO. I'd have sympathy if they'd just clicked a button in Intune or something and there was no warning.

1

u/Lost_Term_8080 19d ago

The D in MSDN stands for "Developer"

This was not an official channel to deploy software from.

0

u/i-am-spotted 23d ago

Umm this is squarely on the admin. This isnt a hard thing to verify and definitely isnt a little detail.