When the extension detects the URL in your browser, the URL is manipulated/changed and redirected to a different place within the Google ecosystem, which Google doesn't understand - and therefore, they are presenting you with the '400 - That's an error' message. To add events to Google Calendar, the user should be sent to a specific web address. When your users hit any of our 'Add to Calendar' buttons and select 'Google' as an option, we immediately redirect the user to Google Calendar. Step 2: In the drop-down menu, select the option of open in new incognito window. Deactivate the extension in the bottom right corner (the on/off switch). Here are the steps to follow: Step 1: Launch the browser on the device and click on the dotted option present in the top right corner.Type in 'chrome://extensions/' in your browsers URL/address bar.We recommend that you (until they've fixed the issue) disable the extension if you want to add events to your Google Calendar.

We've gone back and forward with our customers reporting the '400' error and found that these Google Chrome extensions are causing the error: The server cannot process the request because it is malformed. The typical error Google Calendar is throwing is listed below: If you are getting the following error when trying to add an event to your Google Calendar, you might have a 'greedy' browser extension installed that overrides the URL to Google Calendar.

400 error on google drive sign in