Hi,
Thank you for getting back to us with the updates.
We have tried all the basic troubleshooting steps to disable the “Preview” pane on the "browse" window for uploading a file to a website. However,
the settings does not stay and the preview pane is still shown when you reopen the browse window.
So, in this case, if you no longer want to use the preview pane, then let us try removing its option from the Command Bar on the Windows Explorer through a registry edit and check if that resolves
the issue. On doing this the preview pane will be permanently disabled on the Windows Explorer. Please follow these steps:
a) Press “Windows Logo” + “R” keys on the keyboard to open the “Run” command box.
b) Type “regedit” in the “Run” command box and press “ENTER”.
c) Now, navigate to following key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
d) In right-side pane, create new DWORD “NoReadingPane” and set its value to 1. (To create a new DWORD, click on the option “Edit” at the top, select
“New” and then select the option “DWORD” from that sub-menu.)
e) Restart or log off your system and "Preview Pane" button will get removed from Windows Explorer command bar.
f) To restore the "Preview Pane" button, you can either remove DWORD or change its value to 0.
Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. Follow the steps given here to back up registry.
a) Press “Windows Logo” + “R” keys on the keyboard to open the “Run” command box.
b) Type “regedit” in the “Run” command box and press “ENTER”.
c) Locate and click the key or sub-key that you want to back up.
d) Click the “File” menu, and then click on “Export”.
e) In the “Save in” box, select the location where you want to save the backup copy to, and then type a name for the backup file in the File name box.
f) Click on “Save”.
Hope this is helpful. Please get back to us with the result.