Resolve C0090016, TPM has malfunctioned Microsoft 365 Sign-in Issue

In this article, we will provide solutions to rectify the C0090016, TPM has malfunctioned Microsoft 365 Sign-in error. The Trusted Platform Module (TPM) is responsible for enhancing system security by protecting sensitive data. However, in case of malfunction, authentication problems may occur. Fortunately, you can follow several straightforward recommendations to resolve this issue.

How to Fix C0090016, TPM has malfunctioned Microsoft 365 Sign-in Error

If you want to resolve the TPM has malfunctioned Microsoft 365 Sign-in Error C0090016, please follow these suggestions:

1. Clear the TPM
2. Remove Cached Office Identities in Registry Editor
3. Disconnect and connect to Azure AD
4. Sign in using a Different Account
5. Update BIOS

Now, let’s discuss each of these solutions in detail.

Solution 1: Clear the TPM

To clear the TPM, you need to reset it to its default state by removing the stored keys and the owner authorization value. Follow the steps below to clear your TPM:

1. Press the Windows key + R to open the Run dialog box.
2. Type tpm.msc and press Enter.
3. Under Actions, click on Clear TPM and follow the on-screen instructions.

Alternatively, you can also clear the TPM using Powershell.

Solution 2: Remove Cached Office Identities in Registry Editor

If you are still unable to resolve the issue, removing the cached Office identities in the Registry Editor may help. Sometimes, these cached identities can become corrupted and cause sign-in errors. Follow the steps below to remove them:

Solution 3: Disconnect and Connect to Azure AD

Azure Active Directory is a cloud-based identity service provided by Microsoft, offering protection against data breaches and cybersecurity attacks. It requires TPM with HMAC and EK certificates for attestation support. Disconnecting and then reconnecting to Azure AD may help resolve the Microsoft 365 Sign-in error C0090016. Follow the steps below:

1. Press the Windows key + I to open Settings.
2. Navigate to Accounts > Access work or school.
3. Select the Azure AD connection, click Disconnect, and restart your PC.
4. Again, navigate to the Access work or school page and select Join this device to Azure Active Directory.
5. Enter your account credentials and select Let my organization manage my device.
6. Restart your device once done, and try signing into Office 365.

Solution 4: Sign in using a Different Account

It is possible that the error is related to your Microsoft Account. In that case, try logging in with another account. Alternatively, log in with a Local account and check if the issue is resolved.

Solution 5: Update BIOS

If none of the above steps help, consider updating the Motherboard’s BIOS. An outdated or corrupted BIOS may be the root cause of the TPM error. Updating the BIOS should resolve the TPM error.

We hope this article provides you with the necessary assistance.

Related: Fix Trusted Platform Module has malfunctioned error

How to fix Office 365 login error?

If you encounter errors while logging into Office 365, try clearing the browser’s cache data and cookies. If that does not resolve the issue, consider deleting cached Office identities in the Registry Editor and attempt to sign in using a local account.

What causes the TPM error?

If your device’s TPM is reimaged without clearing it, the TPM may malfunction. In such cases, try clearing the TPM and installing the latest TPM firmware. If the error persists, consider clearing the TPM again.