Remove .NET Framework 1.1 from the Windows Installer cache. To do this, follow these steps: a. Click Start, and then click Run.
b. In the Open text box, type Installer, and then click OK.
c. On the View menu in Windows Installer, click Details.
d. Do one of the following, depending on your operating system:• In Windows XP, right-click the Name column header, and then click Comments.
• In Windows 2000, right-click the Name column header, and then click Comment.
e. Right-click the cached Windows Installer file that has the Microsoft .NET Framework 1.1 RTL x86 enu comment, and then click Uninstall.
f. After the uninstall process has completed, quit the Installer.
2. Manually delete the existing files and folders from your computer. Depending on the present condition of the .NET Framework, this file and folder might not exist .To delete the file and folder, follow these steps: a. Click Start, and then click Run.
b. In the Open text box, type system32, and then click OK. The contents of the System32 folder appear in Windows Explorer.
c. Locate and then delete the URTTemp folder.
d. Locate and then delete the mscoree.dll file.
Note If the .NET Framework 1.0 is also installed on your computer, and you do not intend to reinstall the .NET Framework 1.1, you must repair the .NET Framework 1.0. For more information, see the "Repair the .NET Framework" section.
e. Click Start, and then click Run.
f. In the Open text box, type Microsoft.NET, and then click OK. The contents of the Microsoft.NET folder appear in Windows Explorer.
g. In the Microsoft.NET folder, double-click the Framework folder.
h. In the Framework folder, delete the v1.1.4322 folder.
i. Close the Framework folder.
3. Manually delete the relevant registry keys. To do this, follow these steps:a. Click Start, and then click Run.
b. In the Open text box, type regedit, and then click OK to start Registry Editor.
c. In Registry Editor, locate and then delete the existing registry keys (all the registry keys may not be present): • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v1.1.4322
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\policy\v1.1
d. Quit Registry Editor.
4. Zap Windows Installer information from the registry by using the Msizap.exe utility. The Msizap.exe utility is included with Microsoft Windows Installer Software Development Kit (SDK). To download Windows Installer SDK, visit the following Microsoft Web site:
http://www.microsoft.com/msdownload/platformsdk/sdkupdate/ (
http://support.microsoft.com/?scid=http://www.microsoft.com/msdownload/platformsdk/sdkupdate/)
To zap Windows Installer information from the registry, follow these steps: a. Click Start, and then click Run.
b. In the Open text box, type cmd, and then click OK.
c. At the command prompt, locate the directory that contains the Msizap.exe utility, and then run the following command:
Msizap TP {CB2F7EDD-9D1F-43C1-90FC-4F52EAE172A1}
d. Restart your computer.
5. Clear the contents of your Temp folder. To do this, follow these steps: a. Click Start, and then click Run.
b. In the Open text box, type %Temp%, and then click OK. The contents of the Temp folder appear in Windows Explorer.
c. In the Temp folder, click Select All on the Edit menu.
d. On the File menu, click Delete.
Note Delete as many files and folders as possible from the Temp folder.
6. Disable all antivirus programs and all firewall programs that you have installed on your computer. To do this, use the System Configuration Utility (Msconfig.exe) to perform a clean start of your computer, and then disable any services that you do not need. When you use Msconfig.exe in diagnostic mode, reenable the Windows Installer Service on the Services tab. To start Msconfig, follow these steps:a. Click Start, and then click Run.
b. Type MSconfig, and then click OK.
7. Install the .NET Framework 1.1. To download the .NET Framework 1.1, visit the following Microsoft Web site:
http://www.microsoft.com/downloads/...E3-F589-4842-8157-034D1E7CF3A3&displaylang=en (
http://www.microsoft.com/downloads/...e3-f589-4842-8157-034d1e7cf3a3&displaylang=en)
Note If the .NET Framework 1.0 is installed on your computer, and you do not intend to reinstall the .NET Framework 1.1, you must repair the .NET Framework 1.0 to replace the Mscoree.dll file and the URTTemp folder