Cells won't merge in Microsoft Excel when the data is inside a table or when the workbook is protected or shared.

If Excel filter is not working after certain row, for merged cells, on large files or on protected sheet, then see this post.

If Excel is not opening on double-click or not responding on your Windows 11/10 PC, take a look at the addons first, or else follow these suggestions to resolve the issue.

For the third consecutive year, NewYork-Presbyterian/Weill Cornell Medical Center has been recognized with the Mitral Valve Repair Reference Center Award by the Mitral Foundation for demonstrated ...

The fix is minimal - it only prevents serialization of circular references that cause infinite loops.