SharePoint 2013. Excel Services. w3wp.exe fails with "Exception code: 0x80131623"

I came across an issue the other day where the Excel Services failed to start in SharePoint 2013.When a user clicked an *.xlsx file the following message was displayed in the browser “We’re sorry. We ran into a problem completing your request. Please try that again in a few minutes” and the corresponding w3wp.exe process…

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