Filter option is greyed out in Excel [Fix]

Some users cannot apply a filter in their Excel worksheets because the filter option is greyed out. Do this to fix the issue ...
How-To Geek on MSN

Excel finally fixed its worst problems—but you're still using the old workarounds

Excel has quietly gained dynamic arrays, XLOOKUP, Power Query, and Python, yet many still work the old way.
How-To Geek on MSN

I finally automated Excel timestamps, and it fixed my biggest data trust problem

Excel's Power Query lets you build report-level and table-level timestamps that update on refresh.