Multiple Accounts Errors

What to do if errors result from using multiple Google accounts?

This article describes how to overcome error messages that may result from using multiple Google accounts within the same web browser.


One of the following error messages may be received while using Avery Label Merge add-on:

These errors occur when two or more Google accounts share the same web browser.

For example, Tom may check his personal Gmail ( on one browser tab and then access his work Google Drive ( on another tab. When Tom later comes to do a label merge, he may receive one of the errors above.

This is a documented Google bug

Temporary Work-around

Load the browser in Incognito/InPrivate mode by pressing Ctrl+Shift+N.

Log in only with a licensed Google account and run the add-on as normal.

Permanent Solution

In Google Chrome, create a profile for each Google account. Each user account can then have their own profile to access their Google account, rather than using a single shared profile.

In our example, Tom would have a Chrome profile where he would access all of his personal ( Google services. Tom would also have a Chrome profile where he would access all of his work ( Google services  (see screenshot below). The error would be avoided as Tom would not use multiple Google accounts in the same profile.