Microsoft Outlook error 0x00042000

There are many reasons why you might encounter an error while using Outlook. However, the most common reason why this error occurs is when there is an issue with your computer or your network connection.

To fix this error, you need to try a few solutions.

Solution 1: Try resubscribing to your calendar

The first thing you need to do is try resubscribing to your calendar. This is a very common error that most users encounter. You can try resubscribing to your calendar using the Outlook Calendar button on the Outlook ribbon. You can also right-click on the calendar and choose to Add or Remove Calendars from the menu that appears.

Solution 2: Check for updates for Microsoft Outlook

The next thing you need to do is check for updates for Microsoft Outlook if it is not already installed on your computer or mobile device.

To do this, open up a web browser and type in the URL https://outlook.com/en-us/ or you can use the Microsoft Outlook icon in your computer’s taskbar. Click on Check for Updates in the menu that appears and follow the instructions that appear.

Solution 3: Delete previous appointments

The next thing you need to do is delete any previous appointments from your calendar. To do this, open up the Outlook Calendar button and select Open Calendar. You can also click on File and then on Open Calendar.

You can then click on Delete Appointments in the menu that appears. If you are using Outlook on a mobile device, you can access the same menu by tapping and holding down on the appointments until they all disappear and then tap Delete.