Cannot install/reinstall Microsoft.NET Framework 1.1

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Thread Starter
Dec 30, 2004
Ok, I have a computer that at one time must have had the .net framework installed, but for some reason no longer does. I am trying to install 1.1 which is needed for another software program to run correctly.

I have the dotnetfx.exe file and when I run the program it goes through the installation process, until Registering SystemEnterprise.Services.dll. Then the computer just hangs - no error message, no alt-ctrl-del, nada.

I have tried everything I know, plus everything I can find on the microsoft support site The only steps that I cannot do or have questions about are
#3 - there's a registry key for.NETframework, but not either of those specified.
#4 - I can't figure out a quick way to download the msizap.exe utility

Any help and suggestions would be more than welcome!
Dec 9, 2000
What is the problem with downloading it? It's only 82 kb.

If you have a retail Microsoft CD, it is also a part of the Support tools install.

I can upload msizap.exe here if that will help.

if you run eventvwr.msc do you see any errors in the Application or System log corresponding to the install attempts?



Thread Starter
Dec 30, 2004
Thanks for the file. I searched all over the Microsoft site and couldn't find it. The event log shows 'Installation Failed' and that's it.


Thread Starter
Dec 30, 2004
Also, if it means anything the last entry present in the dotNetFx log is
Calling MdsiInstallProduct() with commandline: REBOOT=ReallySuppress IIS_NOT_PRESENT=1
Dec 9, 2000
Did you double click the event log error to see a full description? Usually they have more info than that.

You can try a Safe Mode install, perhaps there is a 3rd party conflict.

You might also check to see if a drwatson log was created.

C:\Documents and Settings\All Users\Application Data\Microsoft\Dr Watson

There is a long drill included in this thread, scroll down about 2/3 to find it:

edit the site is kind of flaky about showing the full thread, so here is the relevant part:

Gordon from Microsoft Technical Support for the XP SP2 issue I've had on .net framework has been very helpful, I'm making great headway and very much appreciate his diligence, so sharing the information so far. I need to do a few more things and reboot, but this is the best I've done so far, and again, very appreciative of the Microsoft team for this level of detail and commitment to help me.

Paste start ->

Step One:

1. Go to Add or Remove Programs, try to remove all .NET Framework.
2. Please download and install the Windows Installer Cleanup utility
from this link:

3. Then, please run it from Start-> All Programs-> Windows Install
Clean Up.
4. Please remove all Microsoft .NET Framework shown there and click

Step Two:

1. Click Start->Run, type INSTALLER and click OK.
2. In the open folder, click View menu and select Details.
3. Right-click the Date Modified column header.
4. Click Comments
5. In the Comments column, locate the cached Windows Installer file
that displays Microsoft .NET Framework 1.1 (English) RTL x86 enu.
6. Right-click the cached Windows Installer file and then click
7. Close the window.
8. Delete the cached Windows Installer file.

Step Three:

1. Restart your computer.
2. While your computer is booting up, press F8 to invoke the startup
3. In the startup menu, choose Safe Mode.
4. Log on as an administrator.

Note: In Safe Mode, your system display and Desktop will look and
perform differently than in Normal Mode. This is only temporary.

5. Delete the folder C:\WINDOWS\Microsoft.NET
6. Delete the folder C:\WINDOWS\system32\URTTemp
7. In the C:\Windows\System32 folder, locate the file mscoree.dll.
Right click and rename it to mscoree.old

Step Four:

1. Click Start->Run, type REGEDIT and click OK.
2. Navigate to the following registry key by expanding the "+" beside
the registry tree in the left pane:


3. Delete this key in the left pane.
4. Repeat steps 2-3 to delete the following key:

5. Restart your computer to Normal Mode

Step Five:

1. Please download the Microsoft .NET Framework Version 1.1
Redistributable Package from the following link and save it to C:

2. Click Start->Run, type "c:\dotnetfx.exe /C" (without quotation marks
and there is a space in this command) in the open box and click OK.

3. Click Run, and type "C:\.NET Framework 1.1" (without quotation
marks) in the open box click OK

Note: If you are prompted to create this folder, please click Yes to

4. Locate the folder C:\.NET Framework 1.1 and double click the file
netfx.msi in it to install .NET Framework components.

If .NET Framework 1.1 can be successfully installed, we can go on to
install .NET Framework 1.1 Service Pack 1:

Microsoft .NET Framework 1.1 Service Pack 1

Step Six:

If the above two can be installed correctly, please download KB886903
from the following link and install again:

If the problem still exists, please describe the error message when
installing Microsoft .Net Framework Service Pack in further detail.

Paste End !



Thread Starter
Dec 30, 2004

Nope, that's the extent of the event log. When I clicked on the link that (I believe) led to some Microsoft site) that said they could not provide any more information about the error.
Thanks for the link, many of the steps in there I have tried already, but a couple of steps are slightly different. I'll give it a try tomorrow.
Dec 9, 2000
Okeydoke, I found when I went to the site a second time in Opera, the full thread would not display for me -- must have set a cookie. So I used IE to copy the data for what it's worth.

By the way, I know folks who have "ehome" Windows media center installs cannot uninstall .net framework properly without disabling some media center processes or doing it in Safe Mode. Just a tip in case you have "media center"
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