Unlike Windows XP, the common tasks pane is shown at bottom in Windows Vista and Windows 7 explorer and is called "Details Pane".
Sometimes you might find that the Details Pane is no longer shown in Explorer window. I have received many e-mails asking for its solution, so here I'm posting a detailed tutorial with screenshots to re-enable missing Details Pane in Vista and 7 explorer:
Without Details pane the explorer window looks like as following:

Click on "Organize -> Layout -> Details Pane".

It'll re-enable the Details Pane:

Sometimes you might face a strange problem when the option to re-enable "Details Pane" in "Layout" menu will be missing:

Don't worry. It happens when Classic folder option is enabled in "Folder Options". Goto "Organize -> Folder and Search Options" and enable "Show preview and filters" option.

Apply it and it'll re-enable the option to show/hide Details Pane and Preview Pane.
NOTE: If you are wondering why the Details Pane is shown at top instead of bottom in the screenshots, then you can visit following tutorial:
How to Move / Show Details Pane At Top in Windows Vista Explorer?
This article was posted by VG in following section: Troubleshooting, Windows 7, Windows Vista.
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Ugly Bob
Thx!!! Worked for me! :)
Niky
Thnk u so much
Ziodedde
Yeah Buddies this work 4 me
Erick Hoepfner
Thank you so much!
I was searching for months this solution!
david
thank you so very much .......
i tried for 2 hours searching windows help but couldn't find how to turn back on and it was sooooo simple , i mean windows help couldn't just say that , i was really pissed but thanks to you i got it back on thank so very very much........
(i can't stop laughing for some reason)
david
thank you so very much .......
i tried for 2 hours searching windows help but couldn't find how to turn back on and it was sooooo simple , i mean windows help couldn't just say that , i was really pissed but thanks to you i got it back on thanks so very very much........
(i can't stop laughing for some reason)
ak
thank youuuuuuuuuuuuuuuuuuuuuuuuu
a little look on one figure in this website............. made my life easier ,,,,,, a lot
thanksssssss
ak
yes ,,,,,,,,,,,,one more thing
i spent many hours on windows help just to know the name of the "details pane".
i appreciate if u have a solution for somethiong like that
Deng
Thanks buddy!! I read many topics in google results, but only yours helps!!
athf
thankyou for info on "Details Pane"!
i deleted the details pane years ago and could not fix it without doing a factory recovery of the entire system!
because my pc was full of files, a factory recovery wasnt an option!
your help on the matter of detail panes is most useful and appreciated!
also thanks for the preview step by step pics...i need simple instructions like these!
thankyouverymuch!