Patricia,
While I'm not Cody, I can say that I've had this issue on three completely different systems. Dell Latitude, Surface Pro 3, and Dell OptiPlex. I've completely rebuilt my machines in the hope of escaping this Task Manager freezing bug with full reinstall of Windows. The issue reappeared for me within days, when I only have Office 365 installed on the machine.
Other co-workers have experienced the same issue with their machines (three others that I know of). Wish I could just link the Task Manager links to Process Explorer to get past this. Instinctively I open Task Manager when a program acts weird, then within seconds my entire machine will freeze.
One item of note, I had Task manager open one day on the Startup Tab and left it over the weekend, my system did not freeze. Once I got back to the office, I clicked on the Processes tab and within 5 seconds my machine froze up and hung. So I thinkthe issue is specifically with the Processes tab and not simply with Task Manager.