Microsoft Account Errors

How to Fix Error 29 and 80090034 on Microsoft Account

Maira Mehtab Sep 21, 2026 869 views

Question details

The user is unable to log into Microsoft desktop applications with a company-domain account, encountering error codes 29 and 80090034.

Product: Microsoft Account
Device & OS: Windows PC
Scenario: Logging into Microsoft desktop applications like Teams, Outlook, or OneDrive with a work or school account.
Observed behavior: The application returns error 80090034 or 29 after the username and password are submitted. Reinstalling the app does not resolve the issue, though the account works normally in a web browser.

Before you start

Ensure you have your company account credentials handy and check if your organization has recently updated its security policies or required network configurations.

Solution 1Recommended

Clear Cached Credentials and Reconnect Work Account

Disconnecting and reconnecting your company account from Windows settings can refresh your authentication tokens and resolve login errors 29 and 80090034.

Since reinstalling the application does not fix the issue, the problem typically lies within the Windows credentials cache. Clearing these credentials forces the system to generate a fresh authentication token.

Open Windows Settings

Click the Start menu and select the Settings gear icon, or press Windows Key + I on your keyboard.

Navigate to Account Settings

Click on Accounts, then select Access work or school from the settings menu.

Disconnect the Account

Locate your company-domain account in the list, click on it, and select Disconnect.

Reconnect the Account

Once successfully disconnected, click the Connect button on the same page and re-enter your company email and password to re-authenticate.

Administrator Restrictions: If you are unable to disconnect the account, your computer's IT policy may restrict this action. Please contact your company's IT support team for further assistance.

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Frequently Asked Questions

What causes error code 80090034 on a Microsoft account?

Error 80090034 typically occurs when your PC's Trusted Platform Module (TPM) malfunctions or when there is a corruption in the cached authentication tokens for your work account.

Why does my company account work in a browser but not in the desktop app?

Web browsers use standard session cookies for authentication, while desktop applications rely on the Windows credentials manager and device-level authentication. If the device cache is corrupted, desktop apps will fail even if web logins succeed.

Will reinstalling Microsoft Office fix error 29?

Reinstalling the application usually does not fix error 29, as the issue lies in the Windows account credential cache rather than the application files themselves. You must clear the cached credentials in Windows Settings to resolve it.

Login & Account Issues