Reset Preview and Detail Pane Size to Defaults in Windows 10

If you changed the appearance of the Preview pane and Details pane in File Explorer or it became invisible, you might want to reset it. In this article, we will see how it can be done.

The Preview pane shows the contents of certain files selected in File Explorer. For images, it is a thumbnail preview. For documents, it shows some lines from the beginning of the file.
See the following screenshot:
Windows 10 Enable Preview Pane

The Details pane shows extremely useful information about the object selected in File Exporer. This includes the file modification date, the file size, the author of the file and other information which can be related to file properties in Windows.
See the following screenshot:Windows 10 Preview Pane Default

To reset the Preview pane and Detail Pane size to defaults in Windows 10, do the following.

  1. Open the Registry Editor app.
  2. Go to the following Registry key.

    See how to go to a Registry key with one click.

  3. On the right, delete the value named "DetailsContainerSizer". Reset Preview Details Pane SizeRight click the value and select "Delete" in the context menu as shown below.
  4. To make the changes done by the Registry tweak take effect, you need to sign out and sign in to your user account. Alternatively, you can restart the Explorer shell.

You are done. Other articles of interest:

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

One thought on “Reset Preview and Detail Pane Size to Defaults in Windows 10”

  1. i have this same issue with Windows 10 build 1909, but this solution is not working. the sizer folder in regedit is not even there to delete.
    please advise,

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