In Windows 7, if you select more than 15 files, you may find that the right click context menu has been shortened and that items like Open, Print, Edit are missing!
This is by design and Windows 7 does so to avoid accidentally performing these actions on a large number of files.
But if you wish, you can remove this restriction.
To do so open regedit and navigate to the following registry key:
Here create a new DWORD, MultipleInvokePromptMinimum
The Default value is 15 (decimal). The permissable range is 1 – 16 (decimal).
If you wish to reduce this figure, give it a lower value.
If you wish to completely remove this restriction, give it a value ’16′.
A value of 16 is interpreted as “unlimited”.
The registry change will go into effect after logging off and back on, or after restarting Windows Explorer.