Top Solutions for Resolving Outlook Error Code 80090016

Published On - March 19, 2024 by Nasir Khan | Reading Time: 6 minutes

Summary:- Microsoft Outlook is one of the most widely used email clients, catering to millions of users globally. However, like any software, Outlook is not immune to occasional errors that can interrupt its seamless functionality and users’ work. One such error that often leaves users scratching their heads is Error Code 80090016. If you’ve encountered this same error, fear not; we’re here for you. In the blog, we will discuss the error and its causes as well as provide you with actionable solutions to resolve this error code 80090016 efficiently.

What is Outlook Error Code 80090016?

Error Code 80090016 generally displays as a cryptic message that might read something like “Keyset does not exist.” While the message itself might not offer much clarity, the error usually indicates a problem with cryptographic operations within Windows or Outlook. Cryptographic operations are vital for securing sensitive data, including your email communications, and any issue in this domain could disrupt Outlook’s functionality. There are usually several reasons behind Error Code 80090016, like replacing the system board with a different TPM module, corruption of the NGC file folder, the computer’s trusted platform module malfunctioning, and many more. However, once the error occurred on your Outlook application, it looks like this: –

Reasons Behind the Occurrence of this Error Code 80090016

There are several common reasons behind the occurrence of this Outlook Error Code 80090016. Here, we are listed the most common of them: –

  • One of the common reasons behind this error is the corruption of the system files or registry and it can trigger Error Code 80090016.
  • Running an outdated version of either Windows or Outlook can also lead to compatibility issues, resulting in errors. Microsoft regularly releases updates and patches to address such compatibility issues and enhance security.
  • Any third-party software applications or security suites installed on your system might conflict with Outlook’s cryptographic operations, triggering the error.
  • Corrupt or damaged data in the NGC folder will also lead to the occurrence of error code 80090016.
  • This error can also occur due to the use of corrupt PST files in Outlook.
  • While signing into the Microsoft account, it may be possible that you use the PIN code to sign in, and it may trigger an error.
  • A wrong installation process of Microsoft Outlook leads to this error code 80090016.

Simplest Techniques to Fix or Resolve Outlook Error Code 80090016

Method 1: Delete the files of the NGC Folder to Resolve Issue

Encountering Error Code 80090016 related to the NGC (Next Generation Credentials) folder is often attributed to damaged files within its directory. These below steps help you to systematically approach to rectifying such errors effectively.

  1. Open the Windows Explorer. Outlook Error Code 80090016
  2. Navigate to the directory: C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\.
  3. If the AppData folder is not visible, access the “File” menu and select “Change folder and search options” to reveal hidden folders.
  4. Go to the “View” tab and ensure that the option to display hidden folders, files, and drives is enabled. Apply the changes and click “OK“.
  5. Right-click on the NGC folder and select “Properties“.
  6. Proceed to the “Security” tab and click on “Advanced“.
  7. Select the “Change” option next to “Owner“.
  8. Enter your account’s username and validate it by clicking “Check names” and then “OK.”
  9. Ensure that the “Replace owner on subcontainers and objects” checkbox is checked.
  10. Apply the changes by clicking “Apply” and then “OK“.
  11. Now, open the NGC folder.
  12. Delete all the data contained within the folder.
  13. Once you complete the above steps, attempt to access the PIN again.

Method 2: Change the name of Microsoft.AAD.BrokerPlugin Folder

The following are the simple steps to rename Microsoft effectively.AAD.BrokerPlugin folder to resolve the TPM issue caused by Error Code 80090016 after replacing your system board.

  1. Press and hold the Windows key (usually located between Ctrl and Alt) and simultaneously press the “R” key on your keyboard. This action will open the Run dialog box.
  2. In the Run dialog box, type in the following path: C:\Users\%username%\AppData\Local\Packages\
  3. Then, click “OK“. (Note: Replace %username% with your actual username).
  4. Scroll through the list of folders until you find “Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy“.
  5. Right-click on the “Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy” folder and select “Copy.” Then, paste the copied folder onto your desktop. This step is essential for creating a backup in case anything goes wrong.
  6. Now, right-click on the “Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy” folder again, but this time select “Rename” Add “.old” to the end of the folder name so that it becomes “Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy.old“.
  7. Close the Packages folder and restart your computer to apply the changes.

Method 3: Turn-Off ADAL in Windows Registry Editor

ADAL is a .Net Framework utility enabling user authentication to an on-premises Active Directory deployment or the cloud. Turning it off sometimes may resolve the TPM-related issues and error code 80090016. Follow the detailed explanation given below to disable ADAL (Active Directory Authentication Library) in the Windows Registry Editor:

  1. Make sure all Microsoft Office applications are closed before proceeding.
  2. Press and hold the Windows key (usually located between Ctrl and Alt) and simultaneously press the “R” key on your keyboard. This action will open the Run dialog box.
  3. In the Run dialog box, type in “regedit” (without quotes) and then click “OK.” This will open the Windows Registry Editor.
  4. Before making any changes to the Registry, it’s essential to create a backup. To do this, click on “File” at the top-left corner of the Registry Editor window, then select “Export“. Name the backup file something like “registry_backup” and click “Save.”
  5. In the Registry Editor, navigate to the following path:
  6. Click on the “Identity” key in the left pane of the Registry Editor window to select it.
  7. In the right pane of the Registry Editor window, look for a value named “EnableADAL.
  8. If you don’t find the “EnableADAL” value, you need to create it. Right-click on the “Identity” key in the left pane, select “New,” and then click on “DWORD (32-bit) Value“.
  9. Name the new value “EnableADAL.”
  10. Right-click on the newly created “EnableADAL” value in the right pane, and then click “Modify.”
  11. In the “Value data” section of the Modify dialog box, type in “0” (without quotes) and then click “OK.” Setting the value to “0” will disable ADAL.
  12. Close the Registry Editor window.
  13. Restart your computer to apply the changes.

Method 4: Remove All Microsoft Office Credentials

It has been seen that removing all the Microsoft Office credentials in Credential Manager and re-logging to Microsoft Office may resolve this error code.

  1. Press and hold the Windows key (usually located between Ctrl and Alt) and simultaneously press the “R” key on your keyboard. This action will open the Run dialog box.
  2. In the Run dialog box, type in “control.exe keymgr.dll” (without quotes) and then click “OK.” This will open the Credential Manager.
  3. Within the Credential Manager window, select the “Windows Credentials” tab located at the top.
  4. Scroll through the list of stored credentials until you find “MicrosoftOffice16_Data“.
  5. Expand the “MicrosoftOffice16_Data” menu by clicking on it, then click on “Remove.”
  6. A confirmation prompt will appear asking if you’re sure you want to remove the credentials. Click “Yes” to confirm the removal.
  7. After removing the credentials, open Microsoft Outlook.
  8. If prompted, enter your Microsoft Office account password.
  9. Click on “File” in the menu bar at the top of the Outlook window.
  10. From the options presented, select “Office Account“.
  11. Click on “Sign out” within the Office Account settings.
  12. A confirmation prompt will appear asking if you’re sure you want to sign out. Click “Yes” to confirm the sign-out.
  13. After signing out, click on “Sign In” to log back into your Microsoft Office account.
  14. Enter the email address associated with your Microsoft Office account and click “Next” to proceed with the sign-in process.

The following solutions resolve the Outlook Error Code 80090016 issue when it is relatable to the point mentioned, but if the error occurred due to some other thing, then the above process might not be permissible to fix the error. There is also a possibility that this error code 80090016 occurs due to the corruption of the Outlook data file(.pst); in that case, the solution mentioned above will not be helpful.

Method 5:- Repair Your Corrupt Outlook Data Files

Corruption or damage of the PST files may also lead to error code 80090016. Thus, to resolve this error, you need to repair the corrupt PST files. Here, we recommend you use the Regain Outlook PST Recovery Software, which allows you to repair and restore all the data from the corrupt, damaged, or inaccessible Outlook Data File (.pst). The solution enables the recovery of email messages, attachments, contacts, calendars, tasks, journals, and other data.

Free Download100% Secure Buy NowPrice: $39

Simple Steps to Repair a corrupt Outlook PST files

  1. Run the downloaded Outlook PST Recovery Software.
  2. Go to the desired Outlook PST file and initiate the scanning process.
  3. Once the software completes the scanning process, it shows the preview of the mailbox items within the PST file.
  4. Choose the destination path where you want to save the repaired PST file.
  5. Finally, click on the Save Now button to restore all the data from the recovered PST files.


Resolving the Error Code 80090016 in Microsoft Outlook can be hectic, but with the right knowledge and troubleshooting steps, you can easily fix the Outlook Error Code 80090016. Through this blog, we discussed all the suitable and simplest methods to resolve or fix Error Code 80090016; you can implement any one according to your issue. However, if your problem is due to corruption or damage to the PST file, then you must try the recommended third-party utility.

Author: Nasir Khan

I am Nasir Khan from India, working as a Content Developer in Regain Software. Here I am writing about our products and their updates. And writing some free solutions from converting emails or Cloud Migration process. We have tools like Email Converter, Emails backup and Cloud migration.

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