The Windows Operating System leverages the IdentityCRL library to preserve a local record of authenticated cloud users. The data structure relies on several specific paths inside the Windows Registry Editor ( regedit.exe ) to store tokens, profiles, and extended metadata.
Under this key, each subkey represents a Microsoft account email address that has been used to sign into Microsoft services on that Windows profile. The data stored includes not just the email but also the account’s CID (a 16‑hex‑digit identifier) and other identity properties. This information powers the account picker in Windows apps, the Microsoft Store sign‑in, and the “Accounts” section in Windows Settings.
If you have switched from a Microsoft account to a local account but the system still asks for your old credentials, you may need to clear the identity cache.
H --> I[Service Endpoint<br>Lync Online/Exchange Online] identitycrl registry
Delete the IdentityCRL registry keys as described above. If the standard GUI methods fail, this registry cleanup is often the only permanent fix.
An employee changes departments, or a contractor finishes their project, meaning their previous access rights must be terminated immediately.
: Verifiers can check the registry to see if a given identifier is listed. This process is crucial during authentication or when establishing trust. The data stored includes not just the email
While the Identity CRL registry is a powerful tool for managing and securing digital identities, its effectiveness depends on widespread adoption, interoperability across different systems, and the development of robust and privacy-preserving mechanisms for listing and verifying identifiers.
For most users, the IdentityCRL key remains hidden in the background. However, it becomes essential for troubleshooting specific Windows account issues:
Even after selecting “Sign in with a local account instead” or removing the account from Settings → Email & accounts, the Microsoft account email still appears in account‑picker dialogs, Microsoft Store sign‑in prompts, or OneDrive. sections on technical background
Modifying system-level credentials directly involves substantial risks.
, a service Microsoft uses to manage authentication for Microsoft accounts (formerly Live IDs) across various applications like Office, Outlook, and OneDrive. Microsoft Learn Purpose and Function
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HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\IdentityCRL