How to fix the error code 80090016 for Outlook

Outlook is a popular email client developed by Microsoft. It is used by millions of people around the world for sending and receiving emails, managing their calendars, and keeping track of their tasks. However, like any software, Outlook is prone to errors that can disrupt its normal functioning. One such error is the error code 80090016, which can occur when you try to open Outlook. In this article, we will discuss what causes this error and how to fix it.

What is Error Code 80090016?

Error code 80090016 is a common error that occurs when you try to open Outlook. It is also known as the “Keyset does not exist” error. This error usually appears when there is a problem with the encryption keys used by Outlook to protect your data.

Causes of Error Code 80090016

There are several reasons why you might encounter error code 80090016 when opening Outlook. Some of the most common causes include:

1. Corrupted User Profile: If your user profile is corrupted, you might encounter this error when opening Outlook.
2. Missing Registry Keys: If the registry keys that Outlook uses to store encryption information are missing or corrupted, you might encounter this error.
3. Outdated Outlook Version: If you are using an outdated version of Outlook, you might encounter this error.
4. Corrupted Outlook Data File: If your Outlook data file is corrupted, you might encounter this error.
5. Incorrect Security Settings: If the security settings on your computer are incorrect, you might encounter this error.

How to Fix Error Code 80090016?

Now that we know what causes error code 80090016, let’s take a look at some of the ways to fix it.

Method 1: Repair Your User Profile

The first method to fix error code 80090016 is to repair your user profile. To do this, follow these steps:

Step 1: Press the Windows key + R on your keyboard to open the Run dialog box.

Step 2: Type “control” in the Run dialog box and press Enter to open the Control Panel.

Step 3: Click on “User Accounts” and then click on “User Accounts” again.

Step 4: Click on “Manage User Accounts” and then click on “Advanced” tab.

Step 5: Click on “Advanced User Profile Settings” and then click on “Copy To” button.

Step 6: Click on the “Browse” button to choose a new location for the copied profile.

Step 7: Click on “OK” and then click on “Finish” to complete the process.

Method 2: Update Outlook

The second method to fix error code 80090016 is to update Outlook. To do this, follow these steps:

Step 1: Open Outlook.

Step 2: Click on “File” and then click on “Office Account”.

Step 3: Click on “Update Options” and then click on “Update Now”.

Step 4: Wait for the update to complete and then restart Outlook.

Method 3: Repair Your Outlook Data File

The third method to fix error code 80090016 is to repair your Outlook data file. To do this, follow these steps:

Step 1: Close Outlook.

Step 2: Open the Control Panel and click on “Mail”.

Step 3: Click on “Data Files” and then click on “Add”.

Step 4: Browse to the location of your Outlook data file and select it.

Step 5: Click on “OK” and then click on “Close”.

Step 6: Open Outlook and try to access your data.