Error handling when installing Internet Explorer 7

Internet Explorer 7 is the latest version of Microsoft's browser, you really want to use and install it on your computer, but when you install the system the error message 'Internet Explorer 7 cannot be installed' appears (Internet Explorer 7 cannot install). This article will step by step guide you how to edit and handle this error.

Important : This article has information for editing the registry. Please make sure you back up the registry before you edit it so it can be restored if the system has a problem.

Signs of the problem

When you try to install Windows Internet Exporer 7 on your computer, the automatic installation has ended but soon you receive the following error message:

Internet Explorer 7 could not be installed. Bạn cần phải khởi chạy hệ thống của bạn để xác định nào không thay đổi được hệ thống này không có.

After you restart, follow the "Internet Explorer Troubleshooting" shortcut on your desktop to get more information.

( Internet Explorer 7 cannot be installed. You must restart the system to configure that any changes on the system have not been completed yet.
After restarting, go to the 'Internet Explorer Troubleshooting' shortcut on the desktop for more information .)

The cause of the problem

This issue may appear when one of the following conditions occurs:

- Permission for one or more registry subkeys or for files on the computer has been restricted and thus prevents updating of the registry subkeys or this computer file. An error updating the registry key or computer file may cause the Setup program to fail.

- Sometimes the cause may be due to an error in the Internet Explorer 7 installation package.

Error handling methods for successful installation of Internet Explorer 7

Warning : Serious problems may occur if you edit the registry incorrectly when using Registry Editor or any other method. These problems may cause you to reinstall the operating system. Microsoft cannot guarantee that problems can be edited. Editing the registry can put your system in jeopardy

The steps given in this article require changing permissions on registry keys to accept Internet Explorer7 installation. Although editing the permissions required to install Internet Explorer 7, in some cases these permissions can be configured for a specific cause. Make sure you are completely in trouble and are prepared to back up and restore points for the system before changing the registry. In addition, edit the registry permissions so that you can install Internet Explorer 7 and change them back to the original after the installation was successful.

Method 1 : Disable antivirus or anti-spyware programs before installing

If you use any of these antivirus or spyware programs, disable them before installing Internet Explorer 7. Then re-enable the program when the installation process is complete. For example, to install Internet Explorer 7 on a system with Webroot SpySweeper installed, you must first disable IE Hijack.

Some antivirus and spyware programs can prevent the successful installation of Internet Explorer 7 even if you have disabled them.

Method 2 : Reset permissions for unreadable registry subkeys

1. This is a problem preventing the registry from updating:

1. Click Start, click Run , enter % windir% ie7.log and click OK to open the ie7.log file.
   
   Note : By default, the file ie7.log is located in folder C: Windows.
2. Press Ctrl + End to move to the end of the file ie7.log.
3. On the Edit menu, click Find .
4. In the Find what box, enter IECUSTOM: Key is still unwriteable .
5. Under Direction , click Up and then click Find Next .
   
   If you find the " Key is still unwriteable " section, this indicates that there is a problem that is preventing the registry from being updated. For example, the text similar to the following in the log file will indicate that this is a problem:

time_stamp: IECUSTOM: Key is still unwriteable registry_subkey

In this example, registry_subkey is the name of a registry subkey that causes the problem.

If you do not find the " Key is still unwriteable " section in the ie7.log file, go to step 2.

2. Reset the registry permissions for sub-keys that have incorrect permissions. To update the permissions of the registry subkey, follow these steps:

1. Click Start, click Run , type regedit and then click OK
2. Locate then right-click each sub-key that you found in step 1, then select Permissions in the Edit menu.
   
   Note : the ie7.log file contains the following abbreviations:
   1. HKCR = HKEY_CLASSES_ROOT
   2. HKLM = HKEY_LOCAL_MACHINE
   3. HKCU = HKEY_CURRENT_USER
3. Under Group or user names , click Administrators .
4. Under Permissions for Administrators section make sure that the Allow box is selected for each of the following items:
   1. Full Control
   2. Read
5. Make sure that Deny box is not selected for any users or groups.
6. Click Apply and then click OK
7. On the File menu, click Edit
8. Try reinstalling Internet Explorer 7 again. You may have to repeat the steps above if other keys appear to prevent Internet Explorer 7 installation.

Method 3 : Check for files that cannot be backed up or updated

1. This is a problem determining the blocking of files from backup or update. To do this we do the following:

1. Click Start, click Run , enter % windir% ie7.log and then click OK to open the ie7.log file
   
   Note : By default, the file ie7.log is located in folder C: Windows.
2. Press Ctrl + End to move to the end of the file ie7.log.
3. On the Edit menu, click Find .
4. In the Find what box, enter the ArchiveFileForUninstall: ArchiveSingleFile Canceled .
5. Under Direction , click Up and then click Find Next .
   
   If you find the " ArchiveFileForUninstall: ArchiveSingleFile Canceled " paragraph, this indicates that there is a problem preventing IE7 file from being saved for installation. For example, the text similar to the following in the log file may be the problem:

Time_stamp: ArchiveFileForUninstall: ArchiveSingleFile Canceled
Time_stamp: DoInstallation: UpdSpCommitFileQueue for AlwaysQueue Failed: 0x4c7

If you can't find the " ArchiveFileForUninstall: ArchiveSingleFile Canceled " paragraph in the ie7.log file.

2. Reset the permissions for the Vgx.dll file. To set the file's permissions by default, follow these steps:

1. Click Start, click Run , enter one of the following statements, and then click OK :
   1. If you are using Microsoft Windows XP, enter the following command:

echo y | cacls "% CommonProgramFiles% Microsoft SharedVGXvgx.dll" / P BUILTINUsers: R "BUILTINPower Users: C" BUILTINAdministrators: F "NT AUTHORITYSYSTEM: F"

1. If you are using Microsoft Windows Server 2003, enter the following command:

echo y | cacls "% CommonProgramFiles% Microsoft SharedVGXvgx.dll" / P BUILTINUsers: R "BUILTINPower Users: C" BUILTINAdministrators: F "NT AUTHORITYSYSTEM: F" "NT AUTHORITYTERMINAL SERVER USER: C"

1. Try reinstalling Internet Explorer 7.

If the problem still occurs after you have tried all of the above steps, your installation package may be corrupted. You can download the Internet Explorer 7 installation package here and then try again.