How to solve Canon Service Tool "inactive"

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How to solve Canon Service Tool "inactive", You have installed the Service Tool All Version, If the window of the servie tool is inactive, try these solutions:

Solution 1:

1. Power off the printer
2. Plug the power cable in another USB port
3. Restart the procedure

Solution 2:

1. Disconnect the USB cable from the printer
2. Wait a few seconds and power back the USB cable
3. On Windows, click "next" when appears "New peripheral"
4. Open the service tool and the reset

If You don't have installed the canon Service Tool, You can Download Here