How to repair Internet Explorer

To repair Internet Explorer
1. Upgrade the Internet Explorer to the latest version. To install the latest version of Interne t Explorer visit the following Web site:  http://www.microsoft.com/windows/ie/default.mspx  

2. Repair or reinstall Internet Explorer. 
• Windows Vista  Note Since Windows Vista is pre loaded with Internet Explorer 7 there is no direct way to Uninstall the Internet Explorer.
However there are few ways to repair Internet explorer 7 that could address the issue. 
To Repair Internet explorer 7 in Windows Vista try following options: 
• Disable all add-ons 
1. Click to open Internet Explorer.  
2. On the Tools menu, point to Manage Add-ons, and then click Enable or Disable Add-ons.    
• Reset Internet Explorer to default settings  
If disabling add-ons does not solve the problem, try resetting Internet Explorer back to its default settings.
This removes all changes that have been made to Internet Explorer since it was installed.
But it does not delete your favorites or feeds. 
1. Close all Internet Explorer or Windows Explorer windows.  
2. Click to open Internet Explorer.  
3. Click the Tools button, and then click Internet Options.  
4. On the Advanced tab, click Reset.  
5. Click Reset.  
6. When you have finished, click Close, and then click OK.  
7. Close Internet Explorer and reopen it for the changes to take effect

• Run the Microsoft Malicious Software Removal Tool 
Note Malicious software and viruses can frequently cause Internet Explorer to slow down or stop working. 
If you can access the Internet, use the Malicious Software Removal Tool to check the computer for viruses and malicious software.
Click the following link for more help: 
http://www.microsoft.com/security/malwareremove/default.mspx

 • Update Internet Explorer  
Running Windows Update can frequently correct problems by replacing out-of-date files and fixing vulnerabilities. 
1. Click to open Internet Explorer.  
2. On the Tools menu, click Windows Update.  
3. Follow instructions on the Windows Update page.  
Note If you cannot open Internet Explorer or if it opens briefly and then closes, the problem might be caused by low memory, or corrupted or missing system files.
Restart the computer to clear the memory and then open Internet Explorer by itself.    

• Microsoft Windows XP 
Note You must use Internet Explorer 6 with Windows XP.
You cannot use an earlier version of Internet Explorer with Windows XP. 
a.  To Install or reinstall Internet Explorer 6 follow the following steps:  Note Internet Explorer 6 Service Pack 2 is the last version of Internet Explorer 6.
If the computer is already running Internet Explorer 6 Service Pack 2, you must reinstall the service pack to repair the original installation. 
• Visit http://www.microsoft.com/windows/ie/downloads/critical/ie6sp1/default.mspx, and then click Internet Explorer 6 Service Pack 1 under Download, and then click Download.
 Or 
• Execute the Internet Explorer.inf file from \Windows \Inf folder 
1. Click Start, Click Search, select All files and folders.  
2. Make sure that Search system folders and Search subfolders are also checked.  
3. In the All or part of the file name box, type ie.inf .  
4. In the Look in drop-down menu, select C: or the letter of the hard disk that contains the Windows folder and then click Search button.  
5. In the search results pane, find the ie.inf file that is located in Windows\Inf folder.  
6. Right-click the ie.inf file and then click Install on the context menu.  
7. Insert Windows XP CD when it is requested.  
8. Restart the computer when the file copy process is complete.     

• Windows XP with Internet Explorer 7  
To uninstall Internet Explorer 7 to return to Internet Explorer 6 on Windows XP 
1. Click Start and then click Control Panel.  
2. Click Add or Remove Programs.  
3. Check Show updates at the top of the dialog box.  
4. Scroll down the list and highlight the version of Internet Explorer 7 that you are running, and then click Change/Remove.  Note If you are running Internet Explorer 7 Beta 2 Preview – March 20 or later, you do not have to check Show updates.  
5. Go here and select the appropriate version of Internet Explorer 7 for the operating system.    
Note If you receive one of the following error messages when you try to install Internet Explorer Service Pack 1, go to step 2:  Setup has detected a newer version of Internet Explorer already installed on this system.  Setup cannot continue  

b.  Install updates to the Windows operating system. 

• To reinstall updates to the Windows operating system, visit <http://windowsupdate.microsoft.com>, and then click Scan for updates. If there are updates to install, click Install Now.
• Microsoft Windows 98, Windows 98 Second Edition, Windows Millennium Edition, and Windows 2000 

a.  Repair Internet Explorer. 

1. Click Start, click Settings, and then click Control Panel.  
2. Double-click Add/Remove Programs.  
3. Click the version of Internet Explorer that appears in the list of installed software. If no version of Internet Explorer appears, go to step b.  
4. Click Add/Remove.  
5. Click Repair Internet Explorer, and then click OK.  
6. When you are prompted to repair Internet Explorer, click Yes.  
7. Restart the computer.    

b.  If repairing Internet Explorer did not resolve the issue, install Internet Explorer 6 Service Pack 1 from the Internet Explorer Web site or install Internet Explorer 6 from your MSN CD.  Note If the computer is already running Internet Explorer 6 Service Pack 1, you must reinstall the service pack to repair the original installation. 

• To install Internet Explorer 6 Service Pack 1, visit http://www.microsoft.com/windows/ie/downloads/critical/ie6sp1/default.mspx, click Internet Explorer 6 Service Pack 1 under Download, and then click Download.
• To install Internet Explorer 6 from your MSN CD, view one of the following articles. For additional information about how to install Internet Explorer 6 from the MSN CD, click the following article numbers to view the articles in the Microsoft Knowledge Base: 

815692  <http://support.microsoft.com/default.aspx?scid=kb;%5bLN%5d;815692>
MSN: How to install Internet Explorer 6.0 from the MSN 8 CD

834336  <http://support.microsoft.com/default.aspx?scid=kb;%5bLN%5d;834336>
MSN: How to install Internet Explorer 6.0 on a Windows 2000-based computer from the MSN Premium or the MSN Plus CD

883084  <http://support.microsoft.com/default.aspx?scid=kb;%5bLN%5d;883084>
MSN: How to install Internet Explorer 6.0 from an MSN version 9.0 CD

Note If you receive one of the following error messages when you try to install Internet Explorer, go to step 2:  Setup has detected a newer version of Internet Explorer already installed on this system.  Setup cannot continue  

c.  Install all updates to the Windows operating system. 
• To install updates to the Windows operating system, visit <http://windowsupdate.microsoft.com>, and then click Scan for updates. If there are updates to install, click Install Now.

4. (Windows XP only): Run the Windows File Protection program to repair the Windows installation.  Note This step may require the Windows XP or Windows XP Service Pack 1 installation CD.

a.  Sign in to the computer by using an administrator account.  
b.  Run the System File Checker tool to scan the protected files on the computer. 
a.  Click Start, click Run, type sfc /scannow , and then click OK.  

   
5. Edit the Registry and Install Internet Explorer 6. 

1. Sign in to your computer with an administrator account.  
2. Click Start, and then click Run.  
3. Type regedit, and then click OK.  
4. For each of the following registry keys, right-click the IsInstalled value in the right pane of the Registry Editor window, click Modify, change the Value data to 0 , and then click OK. 
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{89820200-ECBD-11cf-8B85-00AA005B4383}  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}    
5. Close Registry Editor.  
6. Install Internet Explorer 6 Service Pack 1. 
• Visit http://www.microsoft.com/windows/ie/downloads/critical/ie6sp1/default.mspx, click Internet Explorer 6 Service Pack 1 under Download, and then click Download.
7. Visit http://windowsupdate.microsoft.com, and then click Scan for updates.