ColorMunki Photo or ColorMunki Design device will not connect on the Windows Vista or Windows 7 operating systems due to the driver was not installed properly or was corrupted.
Uninstall and reinstall the i device driver by following these steps. Of course, a different type of instrument (i.e, ColorMunki, iSis, i1Pro, etc...) will be named accordingly. Please use these steps to reload the device driver:
Connect the ColorMunki Photo or ColorMunki Design to the PC and make sure that the software in not yet opened but fully installed.
Left click Windows "Start", right-click "Computer", and then left-click "Properties".
Click on "Device Manager" in the upper left corner of this window.
In the Device Manager window, locate X-Rite and click the plus sign next to it to display ColorMunki device. This could be listed as an "Unknown Device" or "Other Device" as well. It will most likely have a yellow exclamation or question mark on it. Disconnecting and reconnecting the ColorMunki while watching the Device Manager will allow you to see which device is truly the ColorMunki.
With the instrument plugged in, right-click on the ColorMunki (or Unknown Device) in Device Manager and then select "Uninstall". Place a check the "Delete the driver software for this device." checkbox in the "Confirm Device Uninstall" widow if visible. NOTE*** - If this checkbox is left unchecked, the bad driver will not be completely uninstalled and will reload when the device is plugged back in. Click the "OK" window to complete the driver uninstall.
Unplug the ColorMunki, pause a few seconds, and then plug it back into the USB port.
You should see a "Found New Hardware" window. Select "Locate and install driver software (recommended)" and then "Install" and/or "Continue" to complete the driver installation.