Sharepoint 2013 change default settings of “Upload Image” Pop-Up

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When you upload files or images in Sharepoint you have get a pop-up that asks you about the file, destination library and an option to overwrite extsting files.


When the pop-up appears the checkbox “Overwrite existing files” is checked. To change the default setting we have to change 2 aspx files:

  • Navigate to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\Layouts
  • Make a backup of the following files: upload.aspx and uploadex.aspx
  • Edit the upload.aspx file
  • Locate the line which contains: <asp:CheckBox id=”OverwriteSingle” Checked=”true” Text=<%$Resources:wss,upload_document_Overwrite_file%>” runat=”server” />
  • Change the Checked=”true” to Checked=”false“
  • Edit the uploadex.aspx file and make the same changes on the same lines
  • Save the files
  • Perform an IISRESET

The checkbox is now not selected default anymore.