How to fix the "Yahoo recommends you upgrade your web browser" notices in CometBird


EQ Forum Admin
Staff member
To fix the upgrade notice from Yahoo Mail recommending you change from CometBird to Internet Explorer or Mozilla Firefox please follow these directions.

First, download and install the User Agent plugin from this link:

After installing the user agent add-on, Restart CometBird.

Next, go to the Tools menu, select Default User Agent, and click Edit User Agents:

CometBird Edit User Agents.JPG

Click New and select New User Agent:

CometBird New User Agent.JPG

Type in a useful Description such as "Fix Yahoo Mail - Firefox 25" and then use this string in the User Agent line:

Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:25.0) Gecko/20100101 Firefox/25.0

CometBird Create New User Agent.JPG

Click OK to save the new user agent, then OK to close the user agent switcher options window.

Now go to Tools, select Default User Agent, and Click the user agent you created in the previous steps:

CometBird Change User Agent.JPG

Open a new tab in your CometBird and go to

As long as you are using the user agent created above you will not be prompted with the web browser upgrade notice.