Open the Registry Editor (Start, Run, regedit) and find the key
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion
\Explorer\Advanced\TaskbarGroupSize
Change the Value to one of the following options depending on which one suits you best:
- Group app with "oldest" window first (default) - 0
- Group app with most windows open first - 1
- Group any app with at least two windows open - 2
- Group any app with at least three windows open - 3
- Group any app with at least four windows open - 4
The first and second option tells Windows only to use grouping when the space in your taskbar is getting short. This means, while there there is enough space in your taskbar to display all Windows no grouping will be done. Option three to five tell Windows to ALWAYS use grouping, regardless if there is enough space to display all windows
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion
\Explorer\Advanced\TaskbarGroupSize
Change the Value to one of the following options depending on which one suits you best:
- Group app with "oldest" window first (default) - 0
- Group app with most windows open first - 1
- Group any app with at least two windows open - 2
- Group any app with at least three windows open - 3
- Group any app with at least four windows open - 4
The first and second option tells Windows only to use grouping when the space in your taskbar is getting short. This means, while there there is enough space in your taskbar to display all Windows no grouping will be done. Option three to five tell Windows to ALWAYS use grouping, regardless if there is enough space to display all windows
