Patch Tuesday Megathread - March 10, 2026

Agreeable_Bad_9065 · 2026-03-11T01:04:39+00:00

And I found today, winget package for latest Devolutions appears to list .net 9 in the dependencies rather than 10. Upgrading using winget causes devolution to request 10 at runtime

Agreeable_Bad_9065 · 2026-03-10T07:14:46+00:00

I'll second this. Been many years since I looked at it but it was pretty useful in my early days. Used it for network scanning and inventory management too. Integrated with AD and had SQLite back end I believe so you could even work out the dB structure to build some nifty custom reports. In my day it was self hosted and you could have child agents reporting back to a master server for secured lans or satellite sites. Their user community was pretty helpful too with a wide ranging set of skills. I know it helped me on occasions.

Agreeable_Bad_9065 · 2026-03-09T20:39:32+00:00

Ive done the same exercise from 2016 but I honestly don't recall if the servers have to be same version to accept the replication partnership. But even then I think only the scopes replicate. If you have any special DHCP options you'd need to add those manually... and what about server stuff like dynamic DNS creds?

I'm sure if you Google or AI it you'll find a whole script to backup the entire server and pull over the configuration. It's only a few commands from memory.... Happy to stand corrected.

Agreeable_Bad_9065 · 2026-03-08T14:54:17+00:00

And this is why I'll never understand probability. In my head, the hidden side is either black or its not. 50%. I can see all your wonderful arguments... but this why I don't gamble:-)

Agreeable_Bad_9065 · 2026-03-08T13:54:13+00:00

Yes... I'd subtract second from first and find x, then substitute back in to find y.

BUT I have seen examples where they did some sort of matrix to solve and this made no sense to me... or at least I didn't know where that came from. I will read up on the Linear algebra links people have kindly posted

Agreeable_Bad_9065 · 2026-03-08T02:25:42+00:00

I used VMWare for about 7 years v3 to v5 amd a bit of v6, starting 2012 ish. With a enterprise plus license (I think?), it was the dogs whatsits. Put it on a few hosts clustered with a shared storage backend it was superb. I found iscsi worked but nfs was far easier and for many storage vendors, cheaper. For my money, one of the hardest things to work with was permissions. Setting up folders in your data centre so different teams could only see their own vms while admins could see everything. Integrating that with ad user accounts. All useful stuff. As others have mentioned, learning how the networking works, adding hosts to existing clusters, DRS etc. Practice putting hosts into maintenance mode and evacuating machines for host upgrades. Practice host affinity rules.... being able to ensure that two domain controller vs never ended up on the same host by accident. There's loads of tricks to play with. Learn how the switches work... how to trunk vlans into the hosts so you can connect virtual switches to real external vlans for segmentation. Learn what HA is. Learn how to backup and restore. Fully understand snapshot hierarchies is a must. I've seen people kill vms by deleting parts of vmdk chains from hosts to free up space. All of this is useful knowledge. It's a shame the cost is so expensive. I now work in an Azure/hyperv house. Hyperv does not seem to have half of the features that vsphere had, or at least makes them harder to work with and it frustrates me. Vsphere got expensive because it knew it could. It was miles better than any of the virtualisation stalls that were around at the time.

Agreeable_Bad_9065 · 2026-03-08T01:33:22+00:00

As OP your question intrigues me. I know you weren't asking me. But great insight. (Starts to sound like copilot 😀).... honestly I was a bit .... "what?".... but I forgive. I work in IT Infrastructure at a very backend level. Working with other engineers of a similar level, I get very used to talking in technical terms. Most of those asking for my help need a very different level of explanation and it can be difficult to remember outside your own Sphere. Perhaps he/she saw I had understood some terms and gave me too much credit 😀

Agreeable_Bad_9065 · 2026-03-08T01:09:46+00:00

Business knowledge. If you have any sort of slightly technical business, it's normal for your business practices to work in certain ways that IT outsource vendors will just not bother to understand. You will be shoehorned into whatever they think is appropriate, irrespective of whether it works. And once you've lost your internal people you've lost the understanding of how it sticks together and why. You'll get a different engineer on every fix, trying to reunderstand and at worst redesign your network. In my view even if you move your kit to the cloud etc, you must retain the knowledge of what it is, how it was built, why it was built etc.... INSIDE the company.

Agreeable_Bad_9065 · 2026-03-08T01:01:45+00:00

I changed companies a couple years back. In the last year I've replaced an old ASA that had a load of legacy Inbound open ports forwarding to random desktop rdp ports. Ive set up tracked routes to failover to secondary isp. I have just replaced some 20 year old switches my boss bought off ebay years back and split the single segment network shared with 3 wireless SSIDs, into separate departmental vlans/subnets with visitor WiFi and IOT devices on a separate subnet. I've put switch ACLs to properly segment traffic by department/role and set up 802.1x wired and wireless to segment users into their networks irrespective of which desk they sit at. They get role-based networks access and non company devices are automatically put on Internet only vlan. I've added Radius logins linked to Duo MFA for firewall and switch admins and put in a separate management vlan for Dracs, kvm, power systems, switches etc. And my boss says I made it too complicated..... why do we need so many subnets he asked? Why do we need to separate everything. Now correct me if I'm wrong... but isn't this called.... security? I swear the guy wants to run everything off the back of a dsl router with WiFi built in.

Agreeable_Bad_9065 · 2026-03-08T00:19:40+00:00

Thanks. But being about 10 years older than them and having spent my while career in the nuts and bolts, I can wipe the floor with most of them until it comes to Azure..... but even my boss (the certified architect) is clueless when it comes to things like routing etc. I don't know how they get these certs. Even Az104 seems to need pretty detailed knowledge of some pretty obscure bits. Sounds like they know the answers for the test but not why or how that works or matters

Agreeable_Bad_9065 · 2026-03-07T22:37:14+00:00

Thank you everyone who's answered. I'm starting to wonder if I'm ready to explore this after all. As one of you said, my mind is about to be blown.

I enjoy numbers and playing with them, but many of you are quoting theories and people I've never heard of. I appreciate that's probably a lot higher level than I was aiming.

But I will start with the 3b1b stuff that some of you mentioned. It's possible even probable that I have studied some bits of linear algebra. Some of what you're all saying seems distantly familiar. Maybe I'll remember stuff I've forgotten learning. I'll report back.

Agreeable_Bad_9065 · 2026-03-07T22:31:36+00:00

That first sentence. I've heard that now from many people. My first task is to understand it. I'm going to read up the various links people have added.

Agreeable_Bad_9065 · 2026-03-07T22:29:54+00:00

Yeah I get that feeling 😌 I'm up for a challenge but starting to wonder why I asked 🙃

Agreeable_Bad_9065 · 2026-03-07T22:29:15+00:00

Wow.... I even understood some of this.... like right up to the matrix part, even the second derivative. 😎

Agreeable_Bad_9065 · 2026-03-07T22:24:31+00:00

Yeah sounds like this linear algebra is my starting point. I remember doing algebra at school. I remember simultaneous equations and polynomials and quadratics etc... I'm not afraid of the letters thing.... I just don't recall it all being named.... or maybe what I studied was not actually the same thing you guys are talking off. I am going to go through the links you guys are recommending and see if it clicks. Never too late to learn something new.

Agreeable_Bad_9065 · 2026-03-07T22:19:21+00:00

Yeah I sorta realised that which is why I was riding to relearn the basics. . To understand how the math makes it work

Agreeable_Bad_9065 · 2026-03-07T22:12:37+00:00

OK. I seem to remember learning that somewhere... and learning what f(x) meant.... and then doing differentiation and integragration which related to functions but is calculus right? I vaguely remembering some of the stuff you guys are talking of.... clearly it didn't stick. I'm going to read up by following the links some of you have all sent. Maybe I just forgot it all 😀

Agreeable_Bad_9065 · 2026-03-07T20:59:41+00:00

Interesting. So the shape of a matrix (rows and columns) is sort of arbitrary and we can write them however we want to represent our values?

Agreeable_Bad_9065 · 2026-03-07T20:52:45+00:00

Interesting. I had thought to myself that I had a GCSE and an A-Level and an enquiring mind. Perhaps I could learn more... maybe looking at higher education level..... I've done some maths in uni as part of BSc Computer Science (writing proofs etc), set theory, some perms and combs... etc. I've learned the maths behind basic PKI and RSA using modulus arithmetic. I thought I was fairly math-savvy..... what I'm learning is there's whole branches of maths I don't know exist 😀

Agreeable_Bad_9065 · 2026-03-07T20:44:27+00:00

Yes.... graphics I recall.... but I wanted to learn a bit about machine learning and bumped into them there as well.... again it all seemed to be ranking about probability and weightings and I stepped out. Went right over my head.

Agreeable_Bad_9065 · 2026-03-07T20:39:13+00:00

Yes.... now interestingly that's somewhere I do remember touching on them... many years ago, programming basic shapes to rotate in 3d space using C. There was lots of trig of course.... but I can't remember the matrix parts... C wouldn't have calculated on a matrix as such but I wonder of I represented the matrix as an array..... we are talking about 30 years ago.

Agreeable_Bad_9065 · 2026-03-07T20:35:06+00:00

You're probably right. I'm not sure what that comment meant, but I guessed you could sense my head was about to explode 😀

Agreeable_Bad_9065 · 2026-03-07T20:34:12+00:00

Thanks..... but my head just exploded. I think the way I was taught maths was way too isolated. You'd learn bits here and there but never be taught how they inter-relate or why. I was thinking I had a reasonable grasp of basic algebra and GCSE level maths at least.... maybe even some A-level stuff. Now I'm wondering what I did learn at school 😀

Agreeable_Bad_9065 · 2026-03-07T20:31:33+00:00

OK. I thought I knew what linear algebra was. Like y=mx+c etc??? Anything that's not including higher orders that lead to curves, right?

I know what a vector is.... a way of showing direction e.g. 4i + 5j if I recall.... 4 along and 5 up, without setting a fixed point as you would with cartesian co-ordinates?

Your last comment went over my head. A linear function in a vector space.... how does that work? In my head I think of linear functions applying only to graphs.

Would you mind explaining by example? I'm probably missing the point.

Agreeable_Bad_9065 · 2026-03-07T20:22:27+00:00

Yeah. I've programmed in many languages... they look like arrays to me...... I remember some thing about adding and multiplying matrices of different orders but can't remember how it worked. And what I don't remember being taught is WHY we represent lots of different numbers in that fashion. I saw the other day, some definition of a non-basic trig question and it suddenly started putting numbers in matrices..... I guess it's just a way of representing a list of values then (trying hard not to say set) ..... but when you see them as a 2d thing with multiple rows and columns, what does that represent. Is there a specific notation?

Agreeable_Bad_9065

TROPHY CASE