Microsoft's latest Patch Tuesday fixes 570 security bugs, but some Dell PCs will have to wait

[Alfonso Maruccia]

Microbugs: Microsoft has released yet another Patch Tuesday with record-breaking figures. The latest cumulative update for supported Windows editions is significant in both quality and quantity. However, some Dell machines will not receive the update anytime soon due to compatibility issues.

A month after fixing 200 individual flaws across Windows and other software products, Microsoft is now breaking new ground with another massive Patch Tuesday release. The July cumulative update for Windows 11 (KB5101650) addresses 570 security vulnerabilities, including three zero-day flaws that were either previously disclosed or are actively being exploited by cybercriminals.

The July 2026 Patch Tuesday addresses an unprecedented number of security issues, including 59 critical bugs and 48 vulnerabilities that can be exploited remotely. The three fixed zero-day flaws include CVE-2026-50661, which could allow attackers to gain unauthorized access to BitLocker-encrypted data and volumes.

CVE-2026-50661 was publicly disclosed but had not been exploited, while the other two zero-day flaws are already being used by cybercriminals in malicious campaigns. These include CVE-2026-56155, which could allow an attacker to gain elevated privileges through Active Directory Federation Services. The second privilege escalation vulnerability (CVE-2026-56164) targets Office SharePoint, although Microsoft's server-side Antimalware Scan Interface feature should help mitigate the issue.

Redmond recently confirmed that analysts are now using AI-based tools to examine the company's massive code bases. Automation and LLMs are expected to significantly increase the number of bugs discovered – and hopefully fixed permanently – in Windows and other software products, Windows Executive Vice President Pavan Davuluri said. More "record-breaking" Patch Tuesday releases are likely to appear over the coming months and years.

AI is uncovering hundreds of new issues in Windows and Office, but Patch Tuesday's already legendary reliability does not appear to be benefiting from this additional analysis. In June, Dell identified a significant compatibility issue between an Intel driver used in the company's PCs and a new Windows USB-C Connection Manager introduced in a preview Windows update (KB5095093).

Microsoft said the incompatibility is still affecting the reliability and performance of some Dell systems, which is why the company decided to delay the July Patch Tuesday cumulative update for those machines. The issue was found to affect only PCs running Windows 11 versions 25H2 and 24H2, while supported Windows Server editions should not experience any known problems.

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Microsoft's latest Patch Tuesday fixes 570 security bugs, but some Dell PCs will have to wait

 

[trparky]

If only security updates/patches were delivered separate from the rest of the updates that claim to "fix" things. You know, like back in the days of Windows 7 where we had control over Windows Update.

 

[Squid Surprise]

If only security updates/patches were delivered separate from the rest of the updates that claim to "fix" things. You know, like back in the days of Windows 7 where we had control over Windows Update.

Alas, the average user isn't very tech-savvy... and MS can be deemed at fault if any devices with Windows installed are used in cyberattacks... Their legal team (and coding team as well) has clearly deemed it easier to deliver everything at once, and to make it mandatory for as many users as possible.

 

[trparky]

Alas, the average user isn't very tech-savvy... and MS can be deemed at fault if any devices with Windows installed are used in cyberattacks... Their legal team (and coding team as well) has clearly deemed it easier to deliver everything at once, and to make it mandatory for as many users as possible.

And how has that been turning out lately? Oh yeah... does the phrase "dumpster fire" come to mind?

 

[Squid Surprise]

And how has that been turning out lately? Oh yeah... does the phrase "dumpster fire" come to mind?

In tech circles maybe… meanwhile, MS continues to rake in cash hand over fist… looks like it’s turning out quite nicely for MS.

 

[Hecate91]

Microslop makes an overwhelming majority of their profits in enterprise, office applications, and onedrive subscriptions.
Windows as a consumer OS isn't making them nearly as much profit, which is why consumers end up being the beta testers for AI vibe coded slop through forced updates, which Microslop has admitted to 30% of their code being AI.

 

[trparky]

In tech circles maybe… meanwhile, MS continues to rake in cash hand over fist… looks like it’s turning out quite nicely for MS.

And if you look at the direction of Windows in terms of popularity, it's on the downturn.

Windows as a consumer OS isn't making them nearly as much profit, which is why consumers end up being the beta testers for AI vibe coded slop through forced updates, which Microslop has admitted to 30% of their code being AI.

Exactly. Things like this would never have happened in the past.

Back during the old days of Windows 7, Microsoft was known to have a whole damn building full of computers with all kinds of software and hardware configurations. And they tested their updates in that lab. Actually tested!!!

When Satya took over, he got rid of that lab and basically said Windows will be tested by the public and when things go wrong, we'll find out using telemetry.

Microsoft used to actually eat their own damn dog food! Not anymore and we can see that in how every bloody update that comes out breaks crap the world over. This is the new Windows, the Windows that nobody can depend upon. It's no wonder why companies are planning escape routes from Windows.

I haven't installed this update yet because I depend upon my computer and at this rate, I probably won't install this update until at least two weeks from now. Maybe then Microslop will have to push out another one of their infamous emergency patches only to be followed up with another because... you just know it'll happen.

 

[Squid Surprise]

Not really - 80% desktop market share… basically the same as it’s been for a decade…

 

[trparky]

Not really - 80% desktop market share… basically the same as it’s been for a decade…

Not according to Stat Counter.

Stat Counter puts Windows close to about 65% while ten years ago they were in the high-90s.

 

[Squid Surprise]

Not according to Stat Counter.

Stat Counter puts Windows close to about 65% while ten years ago they were in the high-90s.

Look at desktop… not phones…

No, Windows did not fall below 60% market share or lose 20 points to Linux

A web analytics company, claimed that Windows' market share had fallen from 70% to just 56%, but as expected, it turned out to be a reporting error

www.windowslatest.com

 

[p51d007]

Oh goodie! AI is FINDING the bugs. Betcha AI is writing the code to "fix" them as well. If not now, soon!

 

[trparky]

Look at desktop… not phones…

No, Windows did not fall below 60% market share or lose 20 points to Linux

A web analytics company, claimed that Windows' market share had fallen from 70% to just 56%, but as expected, it turned out to be a reporting error

www.windowslatest.com

Even if the market share is at 72%, it's still a pretty bad fall from the close to 95% hold on the market that they had years ago. To go from 95% to 72% is a 23% drop, close to a quarter of the market they no longer control or rather, dominate.

That's what I'm trying to get you to understand. Windows used to not only control the market, they damn well dominated it. They were the big man, the 1000 pound gorilla, the operating system that up until a few years ago, nobody thought anyone would be able to unseat them.

Yet, here we are.

And if things keep going the way I think it will because Microsoft will never get rid of that id10t named Satya, we'll continue to see Windows lose market share not only to Linux but to the Mac as well.

Then again, a lot of that will be because PCs will be stupidly expensive for the coming years while someone will be able to buy a cheap MacBook Neo for under $700 which will boost Mac's market share like nothing else could. And for a lot of those people, once they're in the Mac ecosystem, they're never coming back.

 

[Squid Surprise]

Even if the market share is at 72%, it's still a pretty bad fall from the close to 95% hold on the market that they had years ago. To go from 95% to 72% is a 23% drop, close to a quarter of the market they no longer control or rather, dominate.

That's what I'm trying to get you to understand. Windows used to not only control the market, they damn well dominated it. They were the big man, the 1000 pound gorilla, the operating system that up until a few years ago, nobody thought anyone would be able to unseat them.

Yet, here we are.

And if things keep going the way I think it will because Microsoft will never get rid of that id10t named Satya, we'll continue to see Windows lose market share not only to Linux but to the Mac as well.

Then again, a lot of that will be because PCs will be stupidly expensive for the coming years while someone will be able to buy a cheap MacBook Neo for under $700 which will boost Mac's market share like nothing else could. And for a lot of those people, once they're in the Mac ecosystem, they're never coming back.

Linux is at 4%… it’s Apple that has gained market share… but actual devices - Windows has more than ever… they’re on top and couldn’t care less… they make their money from enterprise and cloud now.

 

[trparky]

they’re on top and couldn’t care less

And with that attitude, Windows will lose market share. Not all at once but will it happen, slowly but surely.

they make their money from enterprise and cloud now

Exactly. That's why Windows is a back-burner kind of thing. The real software engineering is being focused there while Windows gets... hell, I don't even know anymore. AI?

 

[OortCloud]

...and 571 new bugs have been introduced, the OS has got another 0.1% slower and more bloated and the technology stack has got another 0.2% more impossible to maintain properly.

 

[brucek]

So Microsoft knows their new "USB-C Connection Manager" is incompatible with an Intel driver deployed at significant volume... and decides to bundle this new gizmo with 570 security fixes including severe ones, and deploy it widely? Dell may have been able to prevent it from reaching its machines, but what about all the other PCs with this Intel hardware?

 

[trparky]

So Microsoft knows their new "USB-C Connection Manager" is incompatible with an Intel driver deployed at significant volume... and decides to bundle this new gizmo with 570 security fixes including severe ones, and deploy it widely?

Yeah, really. I could chalk this up as stupidity if this kind of stuff didn't keep happening but it does. It's like nobody inside Microslop learns a bloody thing from these kinds of mistakes. It's like watching someone walk into a rake and have it come up and slam them in the face only to have them do it again a mile down the road.

At some point you just have to admit that what Microslop is doing is straight-up negligence.