Windows & Microsoft Account.

A practical framework for any Windows 10 or 11 error — the four-step process pros actually use, plus a reference for the most common error codes (0x80070005, 0x80070002, BSOD codes, and more).

Step-by-step login fixes for Microsoft 365 / Office 365 — credential cache cleanup, device trust check with dsregcmd, the Conditional Access errors that need IT, and the AADSTS codes that point to each.

A friendly walk-through of password reset, MFA recovery, the incognito test, and the long-form account recovery form for when nothing else works.

Check the primary refresh token with dsregcmd, clear the Web Account Manager cache, recognize Conditional Access patterns, and restore Intune compliance — the real causes of constant sign-outs.

How personal MSAs differ from Azure AD work accounts, why the same email can host both, the URLs that tell you which is which, and the practical rules to never mix them up again.