This post was last updated on March 30th, 2021 at 02:42 pm.

We’ve been getting that question a lot this week!

Here is the answer

The new version of Firefox (version 19) includes its own PDF viewer. So your checks are now showing in that instead of Adobe Reader like they normally would.

If you’re using another browser such as Safari, Chrome, or Internet Explorer you can just disregard this whole thing.

If you are using FireFox, we have instructions for switching back to Adobe Reader so you can go back to printing checks, labels, and reports happily in IconCMO.

How to disable the FireFox PDF Viewer

Open a new window or tab in FireFox (you don’t have to be logged into IconCMO)

Type the about:config into the URL address bar

Hit the Enter key or click the arrow to go to the address

Click “I’ll be careful, I promise!” button, if prompted

Search for PDFJS

Double click on pdfjs.disabled

The value next to pdfjs.disabled will change from false to true

Next, go to your menu at the top of FireFox and select Tools (hint: if your menu is hidden, press the Alt key on your keyboard to see it)

Under the Tools menu, select Options

Click on the Applications tab

Note for Mac users: Applications will be under Firefox: Preferences instead of Tools: Options

Change the Adobe Acrobat Document to Adobe Reader

Change the Adobe Acrobat Forms Document to Adobe Reader

Click OK

And you’re done!