Unable to reset Windows Hello for Business PIN
![Unable to reset Windows Hello for Business PIN](https://tech.nicolonsky.ch/content/images/2019/10/Windows-Hello-forBusiness-ForgotPin.png)
Recently I have been troubleshooting a nasty Windows Hello for Business problem which prevented all users in a tenant from resetting their Windows Hello for Business PIN’s on Azure AD joined devices while getting the error CAA20004. Issue When clicking on “I forgot my PIN”: After completing the account sign-in and MFA challenge the Error CAA20004 came up: Troubleshooting The Azure AD Portal shows us “Failure reason: other”. While recording all the https traffic to Microsofts oauth2 endpoint with Fiddler this finally unveils usable information
![](https://www.minitool.com/images/uploads/articles/2022/02/windows-10-11-pin-not-working-fixed/windows-10-11-pin-not-working-fixed-1.png)
Full Solutions] PIN Is Not Working on Windows 10/11 - MiniTool
![](https://itoolab.com/wp-content/uploads/forgot-pin-to-sign-in-options.jpg)
Reset MS Account PIN in 3 Cases: Online/on Phone/Remotely
![](https://learn.microsoft.com/en-us/windows/security/identity-protection/hello-for-business/images/pin-reset/pin-reset-applications-expanded.png)
PIN reset - Windows Security
![](https://preview.redd.it/cant-add-windows-hello-pin-window-just-closes-down-v0-ldow8zyfpb7b1.png?width=1570&format=png&auto=webp&s=8e16c97784e5eb1e96ce256d682138b0f8bc99e6)
Can't add windows hello pin, window just closes down immediately : r/WindowsHelp
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![](https://global.discourse-cdn.com/cloudflare/original/3X/5/6/5661a8b9ae846840c427498b04bea841a899cc0a.png)
Windows 10 - Windows Hello / Cloudflare wrong company association - General - Cloudflare Community
![](https://jairocadenablog.files.wordpress.com/2016/11/credprov.png)
How SSO works in Windows 10 devices Devices, Security and Identity in #Microsoft365 by Jairo Cadena
![](https://tech.nicolonsky.ch/content/images/2019/10/Error-AAD.png)
Unable to reset Windows Hello for Business PIN
![](https://learn.microsoft.com/en-us/windows/security/identity-protection/hello-for-business/images/pin-reset/pin-reset-applications.png)
PIN reset - Windows Security
![](https://helpdeskgeek.com/wp-content/pictures/2022/08/how-to-fix-something-happened-and-your-pin-isnt-available-error-in-windows-6-compressed.jpg)
How to Fix “Something Happened and Your Pin Isn't Available” Error in Windows
![](https://www.reneelab.com/uploadimg/en/2023/9/2023-09-25-17_33_38_2152a9d2dca44bc2a176fe9dce1922cc.png)
Resetting Your Windows Hello PIN: Everything You Need to Know - Rene.E Laboratory
![](https://i0.wp.com/www.petervanderwoude.nl/wordpress/wp-content/uploads/RWHfB-FeaturedImage.png?fit=1200%2C300&ssl=1)
Requiring the use of Windows Hello for Business for interactive logons – All about Microsoft Intune
![](https://www.partitionwizard.com/images/uploads/articles/2022/06/cant-add-pin-windows-10/cant-add-pin-windows-10-2.png)
How to Fix If You Can't Add PIN Windows 10/11? [5 Ways] - MiniTool Partition Wizard