Education Technology

Solution 40401: Resolving the Error Another Instance of this Application is Already Running when using the TI-84 Plus CE online calculator.

How do I resolve the error "Another instance of this application is already running? 

To resolve this error, you just need to click the button below the calculator [Make this instance active]. After clicking this button, you may need to wait 10 seconds for the emulated calculator to appear.

Please Note: If you do not see this button instead click [Tab] to select the button then [Enter]. If this does not work click [Refresh] on the Chrome Browser then [Tab] to select the button then [Enter].

Additional Note: If the above step does not work try clearing cookies using the steps under the heading Delete specific cookies in Google Chrome Help.