8,770 questions with Windows for home | Windows 11 | Security and privacy tags

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TPM AIK Enrollment Failure 0x80190190 / Intel PTT EK Validation Hello,

Hello, I am following up on my existing TPM/AIK attestation issue. I have completed additional diagnostics that further isolate the problem. System: ASRock B860 Pro-A WiFi Intel PTT firmware: 700.19.1011.2289 Windows 11 / Secure Boot enabled The TPM is…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-06T23:09:54.13+00:00
Bryan Manning 0 Reputation points
answered 2026-10-06T23:18:10.1033333+00:00
Dio Xavier 296.7K Reputation points Volunteer Moderator
2 answers

pop up ads

Hi, I am constantly getting pop up ads showing up on my screen and I can't seem to get rid of them. I am running windows 11 on a Lenovo laptop. The popup ads are showing up on the right side of my screen and they increase in showing up as time goes by,…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-06T21:34:31.0866667+00:00
David Gohman 0 Reputation points
answered 2026-10-06T22:09:48.5866667+00:00
Ivan B 124.9K Reputation points Independent Advisor
2 answers

i KEEP ON GETTING SOMETHING WENT WRONG AND CAN'T USE PIN. i CHANGE THE PIN AND THE SMAE THJING HAPPENS OVER AND OVERE

fOLR SEVERAL WEEKS i REPEATEDLY GET SOMETHING WENT WRONG MASSAGE WHEN USING MY ENTRY PIN AND HAVE TO GET A ODE OR CHANGE THE PPIN. IT IS DRIVING ME NUTS. I NEED A SIMPLE WAYTO GET IN AS THIS IS MY HOME COMPUTER AND THERE ARE NO OTHERS USING IT.

Windows for home | Windows 11 | Security and privacy
asked 2026-10-06T21:44:29.7433333+00:00
Calvin Potter 0 Reputation points
answered 2026-10-06T21:50:32.4033333+00:00
Dio Xavier 296.7K Reputation points Volunteer Moderator
3 answers

Windows Hello Face not working

my windows hello face feature is not working. Says there is no camera available yet both types of camaras are up and running in my Lenovo idea centre computer model F0DJ0050UK Windows 11. What can I do to make it work again as it did before?

Windows for home | Windows 11 | Security and privacy
asked 2026-09-30T21:57:34.8433333+00:00
Isabel Manrara Diaz 0 Reputation points
commented 2026-10-06T16:19:47.36+00:00
Isabel Manrara Diaz 0 Reputation points
1 answer

"backed up" EFS files' User is on a dead computer, how can I access those files?

For years, I have been copying important files from Win10 off to a USB drive formatted in exFAT. Once in a while, I checked that I could open some of the copied files and it all seemed to work fine. The computer I used perished. I bought a new one and…

Windows for home | Windows 11 | Security and privacy
asked 2026-09-05T04:39:16.2366667+00:00
JT M 0 Reputation points
commented 2026-10-06T14:30:32.1466667+00:00
Carl-L 23,090 Reputation points Microsoft External Staff Moderator
1 answer

Intel Alder Lake PTT AIK Enrollment Failure – HTTP 400 (0x80190190) Blocking RICOCHET Secure Attestation

Hello, I am experiencing a reproducible TPM/AIK attestation problem on Windows 11 using Intel Alder Lake Platform Trust Technology (PTT). The main symptom is that Windows is unable to complete AIK certificate enrollment. As a result, Call of Duty…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-03T01:54:22.3233333+00:00
Lucas Kimura 5 Reputation points
commented 2026-10-06T13:02:48.16+00:00
Carl-L 23,090 Reputation points Microsoft External Staff Moderator
3 answers

How to update to Windows UEFI CA 2023 - Solved

I just try using the command Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Control\SecureBoot” -Name “AvailableUpdates” -Value 0x40 Start-ScheduledTask -TaskName “\Microsoft\Windows\PI\Secure-Boot-Update” But, when I check with…

Windows for home | Windows 11 | Security and privacy
asked 2025-10-12T10:17:29.9133333+00:00
CatNap 10 Reputation points
edited the question 2026-10-06T11:59:28.52+00:00
CatNap 10 Reputation points
3 answers

Do I Need A Second Line Of Defense With The Microsoft Defender Antivirus?

Do i need a second line of defense, while only relying on the installed M.D.A.?,after dangerous downloaded downloads have been going through undetected,and they got installed to explored,that hasn't ended well.

Windows for home | Windows 11 | Security and privacy
asked 2026-10-06T00:23:39.8666667+00:00
maroner pierre 45 Reputation points
answered 2026-10-06T01:17:35.8666667+00:00
Bulldog 4,765 Reputation points
1 answer

How can I verify that it was WIndows Defender that asked me to allow sending a file about Brave update?

I am using Windows 11 Home on my pc. Yesterday, some time after updating Brave browser, Windows Defender asked me to allow a file to be sent. The name of the file had something like the words 'brave' and 'update' so I allowed it. Now I think this was the…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-04T07:17:00.91+00:00
Anonym0us 0 Reputation points
commented 2026-10-06T00:18:45.43+00:00
Ian-T 13,360 Reputation points Microsoft External Staff Moderator
2 answers

I keep getting "Your McAfee anti virus has expired", "Secure your computer now via Microsoft Edge", and other pop up notifications.

I keep getting repetitive pop up notifications stating different warnings such as "Norton License Expired", McAfee License has expired", "system alert click here to remove it via Microsoft Edge", "Turn on your…

Windows for home | Windows 11 | Security and privacy
asked 2026-06-29T18:47:43.69+00:00
Kathy Jean Hatfield 0 Reputation points
commented 2026-10-05T22:01:29.0033333+00:00
Ken Bittancourt 0 Reputation points
0 answers

Windows TPM AIK certificate enrollment fails against microsoftaik.azure.net with HTTP 400 / 0x80190190. The TPM EK is present, locally validated, and issued by the Intel ODCA 2 CSME MTP PCH SVN 01 PTT CA. The AIK service rejects the TPM identity with “No

Windows TPM AIK certificate enrollment fails against microsoftaik.azure.net with HTTP 400 / 0x80190190. The TPM EK is present, locally validated, and issued by the Intel ODCA 2 CSME MTP PCH SVN 01 PTT CA. The AIK service rejects the TPM identity with “No…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-05T16:24:59.73+00:00
CYB3R TR0N 0 Reputation points
0 answers

After Windows 11 26H2 update: apps lose saved logins, WhatsApp won't open (DPAPI "Could not get the master key") - cause and fix

Environment: Windows 11 Pro for Workstations, version 26H2 (build 26300.9457), signed in with a Microsoft account and a Windows Hello PIN. Right after the feature update to 26H2 was installed, I had these symptoms: WhatsApp Desktop (Store app) would…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-05T11:46:24.5233333+00:00
Apolônio Serafim 0 Reputation points
commented 2026-10-05T11:47:07.8366667+00:00
Apolônio Serafim 0 Reputation points
1 answer

Recurring Startup Errors: "AI_Cub64.exe - Bad Image" (Error 0xc0e90007) and Suspicious C:\ProgramData processes

Hello Microsoft Community, I am facing two recurring error popups immediately after starting my Windows 11 laptop. These started appearing after a system reboot, and standard system repairs have not fixed them. Here are the exact errors I am…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-05T08:00:07.7533333+00:00
Samadhan Erande 0 Reputation points
answered 2026-10-05T08:19:09.26+00:00
Ramesh 182K Reputation points Volunteer Moderator
2 answers One of the answers was accepted by the question author.

Lockscreen that requires PIN every time it "locks"

Not sure why this should be so difficult to set up, but I want my screen set to lock out access when there is no activity for several minutes. To me, that's what "Screenlock" means. I've tried following the instructions and I can get the screen…

Windows for home | Windows 11 | Security and privacy
asked 2025-08-25T01:28:38.32+00:00
Ali 25 Reputation points
commented 2026-10-04T16:57:27.5433333+00:00
JuliaMarvin 23,010 Reputation points Volunteer Moderator
1 answer

I think my microsoft account got hacked and this is my alt account

I tried to login to my microsoft account but it says that it doesnt exist and when i tried to recover, it also says that it cant recognize the microsoft account. This happened after I join a discord server and do the verfication with my microsoft account…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-04T13:17:52.9166667+00:00
Knightoro 0 Reputation points
commented 2026-10-04T14:49:58.05+00:00
DaveM121 937.2K Reputation points Independent Advisor
2 answers One of the answers was accepted by the question author.

I keep getting popups about viruses

I clicked on a website on chrome that I didn't know (stupid, I know, lesson well learned) and now I keep getting popups in the corner of my screen about viruses. I'm currently running a full scan with windows protection and have run three quick scans,…

Windows for home | Windows 11 | Security and privacy
asked 2025-12-24T12:39:59.4433333+00:00
Natasha TRELOAR 25 Reputation points
commented 2026-10-04T10:25:46.4466667+00:00
EDWARD BUSSEY 0 Reputation points
2 answers

how fix windows security issues my laptop windows security has not been operational

I need to bring my windows security it has not been operational; it does not open when click on its icon

Windows for home | Windows 11 | Security and privacy
asked 2026-10-04T08:30:07.6766667+00:00
Moussa Doukoure 0 Reputation points
answered 2026-10-04T09:06:39.7533333+00:00
Estrella721 46,550 Reputation points Independent Advisor
2 answers

Windows Smart App Control broken

Hello, It often happens that windows Smart App Control block some of my application and then after one or multiple reboot of my pc the app isn't blocked or sometimes after a reinstall of the same exe. But what annoys me, is that sometime the apps (like…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-03T11:41:12.31+00:00
Auquier Cyril 35 Reputation points
edited an answer 2026-10-03T23:56:12.69+00:00
Hendrix-V 19,655 Reputation points Microsoft External Staff Moderator
2 answers

constant windows 11 login

why just recently now do I only have a minute and windows 11 goes back to original screen and sign on and I mean in the middle of anything if you stop typing or mouse you are back for another sign on which is super annoying when dealing with a…

Windows for home | Windows 11 | Security and privacy
asked 2026-10-03T13:36:23.4933333+00:00
Thomas Neville 0 Reputation points
answered 2026-10-03T23:51:56.5933333+00:00
Hendrix-V 19,655 Reputation points Microsoft External Staff Moderator
1 answer

How do I know if it is microsoft tech or scammer

I've been dealing with who I thought was Microsoft tech support. Now i'm wondering if it is real or a scammer

Windows for home | Windows 11 | Security and privacy
asked 2026-10-03T15:44:06.6966667+00:00
melanie wilcher 0 Reputation points
answered 2026-10-03T16:18:48.2533333+00:00
EmilyS726 271K Reputation points Independent Advisor