Dell is blaming Microsoft’s Windows 11 updates for a bug that broke 245+ PC models, but it’s all good now

If you have a Dell PC, Microsoft’s Windows 11 update may have broken it, causing shutdowns, performance issues, and overheating, and Dell has finally released the full list of affected PC models. Microsoft says its most recent out-of-band update (KB5121767) has already patched the affected PCs, but Dell wants you to know exactly what happened.

On June 23, Microsoft rolled out KB5095093, which was an optional update, and those who installed it on Dell PCs, including Alienware models, started reporting performance and heating issues. At that point, neither Dell nor Microsoft admitted that something had gone wrong after Windows Update.

Fast forward to July 14, Microsoft rolled out the mandatory Patch Tuesday update (KB5101650), but it was immediately blocked on some Dell PCs due to severe performance and heating concerns. Microsoft finally explained that certain PCs using Intel technology could experience major performance issues and other problems.

“[Affected] devices can potentially experience unexpected shutdowns, poor performance, increased heat, and battery drain,” Microsoft warned on July 14.

The company said it found that Dell PCs with the Intel Innovation Platform Framework Processor Participant driver had a compatibility problem with a new Windows USB-C Connection Manager interface introduced in the July 2026 update and June 2026 optional update.

Dell’s document confirmed that many of its PCs use this specific driver for various reasons, including power and thermal management, reducing overheating on gaming PCs, and managing performance-related features on advanced hardware.

Moreover, for enterprises, Dell said Intel’s driver helps its PCs detect “human presence in front of the system using features like Wake on Approach and Walk away Lock.”

Microsoft eventually rolled out the out-of-band update KB5121767 on July 18, and it addressed the problems on affected PCs. Later, Windows Latest found that only a handful of Dell PCs had been publicly identified as affected, based on a list internally circulated to enterprises:

• Dell Pro Max 14 Premium MA14250
• Dell Pro Max 16 Premium MA16250
• Dell Pro Precision 7 14 PW714260
• Dell Pro Precision 7 16 PW716260
• Precision 5470, Precision 5480, Precision 5490, and Precision 5770
• XPS 17 9720 and XPS 17 9730

While that list was accurate, it apparently did not include the consumer PCs that most people own. Windows Latest has now received a final list from Dell that includes hundreds of models.

The number of affected PCs has now grown to roughly 245 models, and the list includes the company’s Alienware lineup as well:

Product LineLineupApproximate CountAlienwareArea-51, Aurora, m-series, x-series~20 modelsDell (new naming)Dell 14/15/16, Dell Plus, Dell Premium, Dell S~13 modelsDell Tower / All-in-OneTower, Tower Plus, Slim, 24-inch and 27-inch All-in-One~7 modelsDell Pro MaxMicro, Slim, Tower, 14 Premium, 16 Premium, 16 Plus, 18 Plus, Dell Pro Max 14/16~9 modelsDell ProPro 3, Pro 5, Pro 7, Premium, Plus, standard Pro, Education~18 modelsDell Pro PrecisionPrecision 5, Precision 7, mobile and tower variants~7 modelsDell Pro Essential14 Essential, 15 Essential~4 modelsDell Pro Micro / Thin Client / AIOMicro, Micro Plus, Slim, Slim Plus, Tower, Tower Plus, Thin Client, 24-inch All-in-One~12 modelsDell Pro RuggedRugged 10 Tablet, Rugged 12 Tablet, Rugged 13, Rugged 14~4 modelsDell G SeriesG15, G16~3 modelsInspiron13, 14, 15, 16, Plus, 2-in-1, All-in-One and desktop models~32 modelsLatitude3000, 5000, 7000, 9000 and Rugged series~35 modelsOptiPlex3000, 5000, 7000, 7010, 7020, XE, Tower, Micro, SFF and All-in-One~21 modelsPrecision3000, 5000, 7000, Mobile Precision, Compact, SFF and Tower~28 modelsVostro14, 15, 16, 3000-series laptops and desktops~16 modelsXPSXPS 13, 14, 15, 16, 17 and desktop~16 modelsTotalAlienware, consumer, business, workstation and gaming PCs~245 Dell models

All these PCs could experience issues including poor performance, overheating, battery drain, and even unexpected shutdowns if they installed the June 2026 or July 2026 Windows updates.

Dell explains how Microsoft’s Windows Update broke 245+ models

Dell says the Windows update introduced an “incompatibility between the Intel Innovation Platform Framework (IPF) Processor Participant driver and the Windows USB-C Connection Manager,” which caused the issues on its PCs.

While the problem is now patched, Dell says you should make sure Build 26200.8894, Build 26100.8894, or newer is installed if you do not want to run into these issues. Older builds are still affected, and it’s not possible to roll back the bug, so you need to have either the out-of-band update installed or the upcoming August 2026 Patch Tuesday update.

Microsoft has a long-standing problem with drivers, and this isn’t an isolated case

ASUS ZenBook Duo with dual-screen setup

It’s quite insane that a driver compatibility bug could leave so many PCs in a nearly unusable state, and it shows that Microsoft really needs to get its update quality under control. The problems with Dell PCs are not an isolated case, as we’ve had similar reports in the past, particularly around Intel drivers.

Microsoft is aware of that, and as part of its broader efforts to make Windows faster and more reliable, it’s also encouraging OEMs to build better drivers. At WinHEC, a driver-focused conference, Microsoft stated that it has developed a new Driver Quality Initiative with its partners, where the focus is on:

• Building quality drivers that do not interfere with the kernel or cause other issues. Microsoft says this should improve quality, security, and reliability. For example, the company has been testing updates for PCIe drivers with DMA support and a better Wi-Fi stack, so when drivers start playing by the rules, you can expect better audio quality and networking.
• Approving only trusted driver updates through Windows Update, so the quality bar is higher.
• Removing older drivers that are no longer compatible but are still offered through Windows Update.

Last but not least, Microsoft has asked Intel, AMD, Nvidia, and others to focus on the thermal impact of their drivers and improve the overall “real customer experience.” Some of these changes will begin shipping in the coming months.