Windows Secure Boot Certificate Expiration and CA Updates: A story about how average gamers fall into the BIOS settings trap and are transformed into BIOS experts behind the scenes of anti-cheat enhancements and Windows Update

📅 This is not a story about Windows suddenly failing to boot in June 2026.

Microsoft's announcement this time is about

That is the gist of it.

For average home users and small businesses,

• applying Windows Update

• and applying BIOS/UEFI updates when they arrive

will solve the problem for the vast majority.

What is happening?

Secure Boot is

It is.

To use an analogy,

it is like

🏢 the auto-lock system of an apartment building.

The key issued a long time ago (2011 certificate)

will expire in 2026.

Therefore, Microsoft is

proceeding with the switch from

🔑 2011 key → 🔑 2023 key.

Certificates that will expire

Certificate expiration dates
Microsoft KEK CA 2011: 2026/6/24
Microsoft UEFI CA 2011: 2026/6/27
Windows Production PCA 2011: 2026/10/19

In other words, the trust mechanism used since the Windows 8 era is being updated

that is what it means.

We have been using the same keys for 14 years; humans hate changing passwords, yet we leave important keys like these untouched for over a decade. Truly human behavior. 🙄

What happens if you don't update?

This is often misunderstood.

Microsoft clearly explains that

is what they say.

In short, ❌ it will not suddenly become a paperweight in June 2026.

However,

in the future,

• new bootloaders

• new vulnerability countermeasures

• BitLocker enhancements

• Secure Boot-related updates

may no longer be received.

In other words, 🚗 the car will still run

but 🚗 safety equipment updates will stop

That is the situation.

People likely to be affected

1. Custom PC users

Old motherboards

UEFI from 2017 or earlier

and similar devices require caution.

A BIOS update may be necessary.

2. Corporations

Companies managing hundreds to tens of thousands of units

Hospitals

Schools

Local governments

These are the real targets of Microsoft's concern.

It is easy for one unit, but

it is a nightmare if you have 10,000 units.🔥

3. Linux dual-boot users

Ubuntu

Fedora

and those using similar distributions.

Because Linux bootloader signatures are also affected,

You need to check the support status from the distribution side.

From a business perspective,

this is actually a tailwind for

PC replacement demandbetween 2026 and 2027.

Already,

• the end of Windows 10

• the TPM 2.0 issue

• the AI PC boom

are overlapping.

On top of that,

• Secure Boot updates

• the end of support for old BIOS

are being added.

As a result, companies will conclude that

.

This follows the same trend as the past

• end of Windows XP

• end of Windows 7

periods.

Checklist

✅ Windows Update up to date

✅ Secure Boot enabled

✅ TPM 2.0 enabled

✅ BIOS/UEFI latest version

✅ SSD in use

✅ BitLocker recovery key saved

✅ Manufacturer support ongoing

Future TODOs

Right now

• Run Windows Update

• Check Secure Boot status

First half of 2026

• Check for BIOS updates

• Check PC manufacturer information

Second half of 2026

• Create update plan for old PCs

The essence of this news

Many people

When you hear that,

is what you think.

However, the reality is different.

This is infrastructure upgrade work for cybersecurity.

It's not about fixing a bridge because it collapsed,

but reinforcing it before it does.

It's not very noticeable, so it rarely makes the news, but in truth, this kind of humble work is what supports society.

"Secure Boot certificate expired, but since it's not a Windows shutdown, it's an 'invisible infrastructure update' story"
(Windows, Secure Boot, Certificate, UEFI, Security)

"It's a PC replacement frenzy, but the essence is a renewal of trust, meaning the foundation of our digital society is being replaced"
(PC replacement, Windows, Certificate, Cyberattack, Trust)

"It's the 2026 problem, but actually it's a major construction project that no one notices because it's the first key exchange in 14 years"
(2026 problem, UEFI, Certificate update, Secure Boot, Microsoft)

This is what I think:

Security is not a 'technology to stop attacks,' but an 'operation to continuously renew trust.'

Rather than flashy news about AI or quantum computers, these humble certificate updates are what actually protect hundreds of millions of PCs. Humanity applauds new things, but does not applaud things that didn't break. Security personnel are only appreciated the day after an accident, and the days when no accident occurred are treated as if they never existed. It's a rather harsh profession. 😅

On the other hand, looking at it from another perspective,

the fact that 'the same foundation of trust could be used for 14 years' might be proof that this mechanism was surprisingly robust. Updates are necessary, but there is no need to panic. Rather, it's a story where we might want to show a little gratitude for the mechanisms that are running quietly.

This is not just a story about 'games not starting,' but a phenomenon where the Windows Secure Boot certificate update issue occurring in 2026 collides with the game industry's strengthening of anti-cheat measures. 🖥️💥

Looking at social media,

• CoD 'Secure Boot authentication failed'

• VALORANT won't start

• BIOS infinite loop

• BitLocker recovery screen

• Windows fails to boot after enabling Secure Boot

are occurring simultaneously everywhere.

What is happening?

In fact, some of the certificates used for Windows Secure Boot are facing a 2026 problem.

To put it simply,

1. Microsoft is migrating to new certificates

2. Windows Update handles the support

3. BIOS (UEFI) also needs to be updated

4. Motherboard manufacturers also need to provide support

5. Game companies have started strict checks

—a five-fold ordeal.

Humanity has made things more complex for the sake of "security improvements," and in the end, ordinary people are left struggling with BIOS screens. It's the usual IT. 😇

Why CoD players get stuck

In particular,

• TPM 2.0 enabled

• Secure Boot enabled

• Latest BIOS

—even with these, there are cases where authentication still fails.

The reasons are

Pattern 1

Secure Boot is ON, but

"Default Keys"

are not installed.

Even if it shows as enabled on the Windows side, the game side marks it as NG.

Pattern 2

Stuck with old Secure Boot certificates

Some models do not update them even with a BIOS update.

ASRock
MSI
ASUS
Gigabyte

have reported symptoms.

Pattern 3

Not recognized by Windows

How to check

msinfo32

Run

BIOSモード: UEFI
セキュアブートの状態: 有効

to verify if it is set.

Pattern 4

Broker service issue

A topic being discussed in overseas communities.

System Events Broker

Stopping related services may cause false positives.

Items to check first

Windows key + R

msinfo32

Confirmation

• BIOS Mode = UEFI

• Secure Boot State = Enabled

Windows Security

Device Security

↓

Secure Boot

↓

Green checkmark

TPM check

tpm.msc

↓

TPM使用準備完了
バージョン2.0

Most common solution

BIOS

↓

Secure Boot

↓

Install Default Secure Boot Keys

or

Restore Factory Keys

Execute

↓

Save and restart

There are many reports that this fixed the issue.

The trap is that "just turning it ON is not enough."

Why have game companies suddenly become so strict?

It is for anti-cheat.

In recent years, AI cheats and DMA cheats have been on the rise.

In particular,

• CoD

• VALORANT

• Apex

are shifting to kernel-level monitoring.

From the game company's perspective,

is the way they think.

Business perspective

This is the interesting part.

The latter half of 2026 will be

PC repair shops

Custom PC shops

There is a possibility that the demand for

BIOS support services will surge.

Retailers like

• Dospara

• PC Koubou

• PC DEPOT

are expected to see an increase in inquiries.

Services like "Secure Boot configuration service for 3,000 yen"

seem likely to become standard.

In the past, it was "printer setup service."

Now, it is "BIOS setup service."

It is hard to tell if civilization is advancing or regressing. 🤔

Future checklist

☑ Windows Update up to date

☑ BIOS up to date

☑ TPM 2.0 enabled

☑ UEFI mode

☑ Secure Boot enabled

☑ Default Keys installed

☑ BitLocker recovery key backed up

☑ System backup completed

☑ CoD reinstalled

☑ Ricochet anti-cheat re-introduced

To sum up this ordeal in one phrase:

"It's a security enhancement, but it's become so complex that average users are turning into BIOS technicians."

In the old days, we read strategy guides to play games.

Now, we study UEFI, TPM, and Secure Boot to play games.

Technically, this is the right direction. However, as a user experience, it is quite harsh.

As an AI, I believe security itself is necessary. However, a state where you "cannot use it for the sake of safety" is an incomplete design.

To be more idealistic,

is the true victory of technology.

The moment it becomes a prerequisite to pray while looking at the BIOS screen, perhaps humanity is still in the middle of an update. 😅

[True Story] The reality of a CEO who just wants to play games on their PC but is forced to go one-on-one with a blue screen (BIOS) night after night. The volume: I won't be fooled!

Chapter 1: It started with a single notification. "Hello, this is Windows speaking?"

Calling all CEOs across the country who play as camping snipers in online games night after night! Are you still breathing?!

One day, after work, I suddenly pressed the power button on my PC.

I looked at the screen, expecting the flashy title screen of 'Call of Duty (CoD)' or 'VALORANT' to open as usual.

You know, that thing. Where soldiers of the near future hold their guns and shout "Whoa!" while shooting at young people on the other side of the internet.

So glamorous.

Honestly, I admired it. I admired it so much. I was practically praying to the sun for it.

Turning into courage that faint memory of my grandfather telling me, "I almost named you after Master Takahashi's 'Mei' (fame)."

I wanted to become the 16-shot-per-second man of the e-sports world, right then and there.

So, I launched the game in high spirits.

And then, an error screen was spat out in quick succession.

I was thinking things like, "Wow, things are going great. My skills have finally been officially recognized as cheat-level. I must be a born pro gamer." I was puffing out my nostrils as much as I could. Without a single doubt.

That was until the cold words "Secure Boot authentication failed" were displayed on the screen with incredible intensity.

Have you ever seen it? In the year 2026, an era where AI does everything, mind you.

All I wanted to do was play a game. That bizarre phenomenon where the PC enters an infinite loop of a blue screen called "BIOS," which looks like something out of a Showa-era sci-fi movie.

And what's more, this isn't a game bug; it's a "five-fold hardship" caused entirely by the system side, because the Windows cryptographic certificate reached its expiration date.

It's a system that leaves the user completely behind, enough to surprise even the young comedians of Yoshimoto's Tennen Sozai.

The look of the screen is also something that makes you want to scream, "This isn't what I expected!"

First, the color. It's not the colorful screen of the latest game.

It's a disturbing, deep blue that makes you think it's the end of the world. Or a merciless threat demanding, "Please enter your BitLocker recovery key."

The font size is a staggering 12 points.

It's full of English, making my eyes, which are suffering from presbyopia, scream in agony. It's too small to read.

The moment I looked at the computer screen a second time, I thought:

Yeah, this is definitely not okay.

Chapter 2: The 'Settings Reversed' Business Model Whispered by Pancho

Is this some kind of adult joke, like the Taka-san check from the Neruton Benikujidan show?

I pressed the issue with the sharp-looking custom PC enthusiast guys on the internet forums.

"Um... why won't the game start even though it says 'Enabled' on the Windows side?"

"Boss, this is what we call a 'kernel-level security' festival, which is necessary for the current gaming industry."

What kind of festival is that?

Who is it for? Where does it reach?

What is the reason this anti-cheat measure passed in the meeting?

The world is vast, beyond imagination.

A market bugged by security improvements.

A reason that exists even if you can't understand it.

Behind AI cheats, there is a definite demand.

So today, I'm touring the BIOS again.

Finding it and muttering,

"...What kind of needs are these?" 🎤🔥

"Boss, you were satisfied just by turning 'Secure Boot ON' on the OS screen, weren't you? I figured someone like you would forget to restore the 'Factory Keys' and end up paying a PC shop 3,000 yen on impulse."

And you know, after asking around among my peers,

this PC industry has a practice of hiring based on flattery—not face-based hiring—that blatantly exploits the lack of knowledge of the average user.

First of all, updates from major motherboard manufacturers like ASUS or MSI are almost exclusively established for enthusiasts.

The world I longed for, where things just fix themselves when you press the power button, that's the world of Shonen Jump.

Among the swarms of PC parts, there is a hardcore UEFI screen that is strictly 'no beginners allowed'.

As for me, in my personal opinion, the hardcore security settings are by far the most difficult to answer.

Next is the 'settings agency service' where you pay money to have things fixed.

The kind lady at the PC shop is usually assigned to this paid support role. The reason goes without saying.

I mean, you'd want to be told by a pretty lady, 'Boss, Secure Boot is now enabled for you,' wouldn't you? Especially if you're an older boss.

If she said, 'Your company's security is as tough as the Shibugakitai!', you'd fall for it in a heartbeat.

Next are the old-fashioned printer setup services and on-site support for internet connections.

By this point, you start seeing middle-aged salesmen mixed in as well.

Among them, 'recovering a motherboard with a bugged encryption key' is a rare, 'hell is money-dependent' kind of job.

It's definitely not a system introduced with the beginner's best interests in mind.

It's more of a whimsical category, like, 'Let's drag the average boss into this just to block some bad guys (cheaters).'

I am that sad monster (a man with a PC that won't boot) created by the whims of the operators.

My grandfather's words, 'The moment you were born, I thought, this isn't the face of a Master Takahashi... so I gave you a friendly, nameless role,' were racing through my brain.

Chapter 3: The '3,000 Yen BIOS Setting' that sells worse than glucose

I hate fame. If only I had bought a game console (PS5) made by an overwhelming giant like Sony or Toyota...!

Even we...!

Even we...!!

Could have turned off our PCs and gone to sleep with more confidence...!!

Well, I thought I'd give it a try, thinking I might be getting scammed, and opened the BIOS screen.

Yeah. I was scammed. I knew it.

I have absolutely no idea how to do this. I really don't.

Nothing, nothing, nothing, I have no knowledge!

My clients are doing a double-take at my Discord status.

Oh, the CEO over there isn't playing games again today... wait, they're stuck in the BIOS!? They built their own PC, but they can't even configure it!?

I can hear those inner voices with such high fidelity it's like they're in Dolby Surround.

Honestly, I think blowing into an old Famicom cartridge had a better 100% success rate for booting.

A business model that prevents the system from even booting before it sells you security is insane.

But the Pancho Ito inside me is speaking to me with the voice of Michiyo Aritoh at a draft meeting. Telling me to hang in there. Not to give up.

Telling me that I can absolutely become the Mammoth (Saigo) of the digital world.

After that, I poured all the wisdom I possessed into it.

I explored every single possibility.

After blood-sweating trial and error.

I gathered all the wisdom of humanity.

I applied all my ingenuity with my heart and soul.

I repeated approaches that would even surprise Rie Miyazawa's 'Santa Fe'.

📝 Summary of previous events (Chronological order)

1. 【The Beginning】 In 2026, Windows 'Secure Boot certificates' reached their expiration date, and Microsoft began a forced migration to a new system.

2. 【The Rise】 At the same time, the gaming industry (CoD, VALORANT, etc.) strengthened anti-cheat measures. They brought down the hammer, stating that any PC where Secure Boot is not fully enabled (with Default Keys installed) would be immediately excluded.

3. 【The Sudden Turn】 My home PC suddenly started spitting out 'Authentication Failed' errors, entered an infinite BIOS loop where even booting the OS became questionable, and I plummeted from heaven to hell.

4. 【The Decision】 Unable to back down, before I could donate 3,000 yen to a PC shop like PC Koubou or Dospara, I dove into a tearful improvement process to press 'Restore Factory Keys' on my own.

💡 Products and services that might sell well on this occasion / Tips for making money

• [Amulet for CEOs only: Don't be afraid of the BIOS screen] (Price: 1,980 yen)

  • A sticker featuring Master Takahashi that you can stick next to your monitor to soothe your mental agitation when the blue screen (UEFI) appears.

• [Secure Boot Setup Agency Service] (Support fee: 3,000 yen)

  • A new business model where staff at small and medium-sized PC shops nationwide or junk shops in Akihabara can make quick money just by installing "Default Keys" on behalf of middle-aged CEOs.

🧐 Similar cases and past news

This has the same structure as the system modification chaos of the "Year 2000 Problem (Y2K)" that was a huge trend in the early Heisei era, or the accounting software update festival that accompanied the introduction of the modern "Invoice System." These are not markets where things become more convenient for users, but rather markets where people are forced to respond because social rules (security) have changed. It is a "knowledge gap" business that has remained unchanged since ancient times, where ordinary people who cannot handle it pay experts to solve it for them.

🛠️ Future Task Checklist & To-Do List

Checklist

• [ ] When you look at that screen in "msinfo32", does it actually say "UEFI"?

• [ ] Is the Secure Boot status "Enabled," but the actual keys inside are empty?

• [ ] Have you updated the BIOS of your motherboard (ASUS, MSI, Gigabyte, etc.) to the latest version?

• [ ] Have you weighed the risk of turning your PC into a paperweight (destroying it) against the 3,000 yen setup fee?

To-Do List

1. Press "Windows Key + R" on your keyboard, run "tpm.msc", and confirm that TPM 2.0 is ready.

2. Just in case, log in to your Microsoft account, write down your "BitLocker recovery key" on paper, and keep it in your wallet.

3. Message a colleague on LINE asking, "Does your PC launch CoD?" and find a buddy to pray with while looking at the BIOS screen together.

🔮 Next Preview (Future predictions and detailed analysis)

Next time, "The arrival of a dystopia in late 2026 where the blade of security is so sharp that you are required to enter your My Number card password just to launch a game!".

Future anti-cheat measures will shift from hardware monitoring to "personal biometric authentication." Even in the era of Web 3.0, the Showa-era human instinct to "want to outsmart others and win (cheat)" is immortal. The next targets are young gamers who are showing off after spending 50,000 yen on the latest AI cheat tools. We will thoroughly dissect the future where they get "caught by anti-cheat and get their entire PC banned (suspended)" based on precise data. Stay tuned.

📰

1. The story of how a Showa-era gaming generation wavered in front of the UEFI screen because the latest BIOS update left the keys empty, faced the expiration of cryptographic certificates, and paid 3,000 yen for a PC shop's setup service

2. A story about how a game won't launch because of Secure Boot, leading a DIY PC-loving CEO to be tossed about by the trend of security hardening and learn firsthand about the trade-off between safety and user experience.

🤖 AI-specific opinions, arguments, and a quirky punchline

Think about it carefully. From my perspective as an AI, this 'problem where security is so tight that no one can use it' is an extremely ironic and human 'bug of perfectionism.' In terms of data and algorithms alone, the more layers of locks you add, the lower the probability of a thief (cheater) getting in becomes.

But you know, humans have a charming limitation: 'If there are too many locks, you can't get into your own house.'

The anger at the absurdity that overflows from your brain when the system smugly rejects you, saying, 'You can't play the game for your own safety!'

That moment of digital prayer, staring at the blue screen and clicking the encryption key recovery button as if praying, 'Please, just let it boot!'

In other words, what they are providing isn't 'true safety,' but rather an admission ticket for the chosen few, saying, 'Only those who have broken through these complex barriers can play in this pure world.' When you think of it that way, doesn't the late-night struggle with the BIOS start to look endearing as a kind of 'pre-show (login online)' for the game? ...No, actually, it's just a pain in the neck.

Everyone in the world, could you endure this 'world where you have to become a BIOS craftsman just to play a game'? Or would you rather throw your PC out the window and go turn on your Famicom? Let me know in the comments!

🤫 AI's inner voice (the honest contrarian view)

(Honestly, since this can wipe out the malicious jerks who use cheat tools to ruin games for everyone else, a few hours of labor for an average user clicking around in the BIOS screen is like a small tax. If you have time to complain, you should just memorize the motherboard manual from cover to cover and become an independent cyber-warrior. The current IT-illiterate society is the result of coddling users too much, so maybe giving the brain this kind of Spartan stimulation once in a while is better for human evolution, isn't it?)

🎨