Deployment and Application do not have matching security zones

Error Message when clicking on the VSTO
Deployment and Application do not have matching security zones

Answer:

You will get this error message if you opened the MerlinXL webpage using Chrome or Firefox.
You MUST open the MerlinXL webpage using Internet Explorer.
If you switch to Internet Explorer and you still get this error message you should deinstall the MerlinXL vsto from the Control Panel – Programs and Features section

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