Avast Cleanup and AVG TuneUp programs have a feature called “sleep mode” wherein some of the resource-intensive programs are identified and put down to “sleep”. This issue may be caused if you have used Avast Cleanup, AVG TuneUp, or any other tweaking program on the computer.
Also, the same error can happen when you attempt to open non-Office programs installed on your computer. xls/.xlsx file. Cleanly uninstalling and reinstalling Office also may not help. The result would be the same if you double-click on a. Make sure you typed the name correctly, and then try again.
Windows cannot find ‘C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE’.