A call from a user: “Lotus 1-2-3 files won’t launch in Excel”

Microsoft, in the latest Service Pack for Office, blocked file associations for Lotus 1-2-3 files.  Security was the reason given.

So what this means is that you can’t double click on WK4 files, and expect them to launch in Excel.  Told the customer about a work-around, and off they went happy.

Six weeks [...]