Netscape Navigator:
1. From the Options menu, select General Preferences
then the Appearance tab.
2. Click "Expire now" to immediately clear the history file.

Netscape Communicator:
1. From the Edit menu, select Preferences then the Navigator category in the list along the left side of the window.
2. Click on "Expire now" to immediately clear the history file.

With Netscape closed, search your computer for the history file and delete it. The next time you open the browser, the file will be recreated.

• For Windows (all versions), the file is called netscape.hst
• For Macintosh, the file is called global history
• For Unix (all versions), the file is called history.dat

How do I clear the Netsite (Location) Toolbar drop-down menu?

To determine which version of Netscape Navigator or Communicator is running, select "Help" menu, select About Communicator | Navigator | Netscape (the entry will differ depending on which version). The first line of the resulting screen will tell you the version number.

Operating Systems: Windows 95, 98, or NT 4.0
Product version: Navigator 2.0 - 3.04

Quick Method:
Only the last 10 URLs typed into the Location Bar text field will be listed. Since only these last entries  are stored, the easiest method of clearing unwanted entries is to type a number of URLs to displace those currently listed.

To completely clear all URLs:
CAUTION: The following instructions require editing the Windows Registry. This can potentially harm the system if the wrong entries are edited or deleted. Make certain you have current backups of your system before proceeding. Consult Windows help if needed.

1. Close Navigator.
2. From the Windows Start menu, select Run...,
type: regedit.exe (in Windows 95 and 98) or regedt32.exe (in Windows NT 4.0), and press ENTER.
3. Click the plus sign beside the following: hierarchy:
HKEY_CURRENT_USER
   -Software
      -Netscape Navigator
4. Select "URL History" on the left.
5. On the right, clear each entry. In order to do this, double-click in the Name column of a line, then delete whatever appears in the Value data field of the dialog box; click OK to save the changes. Repeat this for each line.
6. Exit the registry editor by clicking Regedit|Exit.
If this does not work, it is possible that the the Windows 3.1 version of Navigator is installed. In that case, try using the the Windows 3.1 version of Navigator instructions to clear the URL history.

Operating Systems: Windows 95, 98, NT 4.0
Product and Version: Communicator 4.0 - 4.05

Only the last 15 URLs you typed into the Location Bar text field will be listed. Since only the last entries you typed are stored, the easiest method of clearing unwanted entries is to type a number of URLs to displace those currently listed.

In order to completely clear all URLs:

Clearing the location bar URL History involves editing a Netscape data file. Editing this file incorrectly could prevent Communicator from launching or working properly. Before you edit the , make a back up copy of the file.
1. Go, on your hard drive, to your Communicator profile folder. If you have installed in
the default location, it is likely located here:
C:\Program Files\Netscape\Users\{Your_Profile_Name}\ .
2. Find the prefs.js file.
3. Copy this file to a safe location on a floppy disk or elsewhere on your hard drive.

After making a copy of the file, you can edit the original:
1. Close Communicator.
2. Open a text editor such as Windows Notepad.
If you have not edited your Windows 95 Start menu, you should be able to open Notepad by clicking on
Start|Programs|Accessories|Notepad.

3. In Notepad, click File|Open... and browse to the prefs.js file. Open the prefs.js file.
4. Look for lines which look like this:

user_pref("browser.url_history.URL_4", "http://help.netscape.com/");
user_pref("browser.url_history.URL_5", "developer.netscape.com/");
user_pref("browser.url_history.URL_6", "ftp://ftp.netscape.com/");

5. Delete only the lines which begin with "user_pref("browser.url_history.URL".
6. When you have successfully deleted these lines, make sure you have left no spaces between lines, and then save the file by clicking File|Save As.
7. Save as "prefs.js"

Open Communicator and the entries should be gone. Operating Systems: Windows (all versions) Communicator 4.06 - 4.7 
1.Open Communicator.
2.From the the Edit menu,
select "Preferences."
3.Click on "Navigator" on the left so it is selected.
4.On the right, click the "Clear Location Bar" button.
5.Click OK