Installation of .NET Framework fails and requires manual removal (320112)

RESOLUTION

1. Remove the .NET Framework 1.0.3705 from the Microsoft Windows Installer cache. To do this, follow these steps:
   1. Click Start, and then click Run.
   2. Type Installer, and then click OK.
   3. On the View menu select Details
   4. Right-click the Date Modified column header.
   5. Click Comments
   6. In the Comments column, locate the cached Windows Installer file that displays Microsoft .NET Framework (English) RTL x86 enu.
   7. Right-click the cached Windows Installer file, and then click Uninstall.
   8. Close the window.
2. Manually remove the files and the folders from the computer. To do this, follow these steps:
   1. Click Start, and then click Run.
   2. Type System32, and then click OK.
   3. Locate and then delete the Mscoree.dll file.
      
      Warning Do not delete the Mscoree.dll file on a computer that is running Microsoft Windows Server 2003.
   4. Close the window.
   5. Click Start, and then click Run.
   6. Type Microsoft.NET, and then click OK.
   7. Double-click the Framework folder.
   8. Delete the v1.0.3705 folder.
      
      Note If Microsoft .NET Framework version 1.1.4322 is also installed on the computer, you must run a repair of that version of the .NET Framework. For more information, see the "How to Repair .NET Framework 1.0.3705 or 1.1.4322" section of this article.
3. Manually remove the registry keys from the Windows Registry. To do this, follow these steps:
   
   Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
   1. Click Start, and then click Run.
   2. Type regedit, and then click OK.
   3. Remove the following registry keys:
      • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\PendingUpdates\v1.0.3705
      • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\policy\v1.0
      • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\Full\v1.0.3705
      • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\Product\Microsoft .NET Framework Full v1.0.3705 (1033)
   4. Quit Registry Editor.
4. Zap the Windows Installer information from the registry by using the Msizap.exe utility. To do this, follow these steps:
   1. Msizap.exe is included with the Microsoft Windows Installer SDK. To download the Windows Installer SDK, visit the following Microsoft Web site:

      http://www.microsoft.com/downloads/details.aspx?FamilyId=A55B6B43-E24F-4EA3-A93E-40C0EC4F68E5&displaylang=en

   2. Click Start, and then click Run.
   3. Type cmd, and then click OK.
   4. At the command prompt, type CD\Program Files\Microsoft SDK\Bin, and then press ENTER.
   5. Type Msizap TP {B43357AA-3A6D-4D94-B56E-43C44D09E548}
   6. After the Msizap.exe process has completed, type Exit, and then press ENTER.
   7. Restart the computer.
5. Clean out the contents of the Temp folder. To do this, follow these steps:
   1. Click Start, and then click Run.
   2. Type %Temp%, and then click OK.
   3. On the Edit menu, click Select All.
   4. On the File menu, click Delete.
   Note Delete as many of the files in the Temp folder as possible.
6. Disable any antivirus or firewall software. Note You may use the System Configuration Utility (Msconfig.exe) to clean boot the computer. Then, disable any nonessential services.
7. Download and install the .NET Framework 1.0.3705. To do this, visit the following Microsoft Web site:

   http://www.microsoft.com/downloads/details.aspx?FamilyId=D7158DEE-A83F-4E21-B05A-009D06457787&displaylang=en

8. If the .NET Framework 1.1.4322 is installed on the computer, you must run a repair of .NET Framework 1.1.4322 to update specific files that were rolled back by the installation.