Unable to reset Windows Hello for Business PIN

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

Non-Destructive PIN reset - Mindcore Techblog

Microsoft Windows Hello for Business

Unable to reset or remove the Windows Hello PIN - Microsoft Community

Allow PIN reset for Windows Hello for Business

Windows hello pin - unable to reset or remove. - Microsoft Community

Microsoft Windows Hello for Business

How to Reset Windows Hello Biometrics

Can't add windows hello pin, window just closes down immediately : r/WindowsHelp

Setting up, changing or removing a PIN

Fix] Unable to Add and Use PIN Sign-in Option in Windows 10 – AskVG

Configure Windows Hello for Business in Azure AD

Full Solutions] PIN Is Not Working on Windows 10/11 - MiniTool

The Ultimate Guide to Windows Hello for Business