Question about Microsoft Windows Vista Ultimate Edition

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Error 1721 When I try to install software I get this error message. Error 1721. There is a problem with this Windows Installer Package. A program required for this install to complete could not be run. Contact your support personal or package vendor. HOW DO I FIX THIS PROBLEM?

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  • Roberta Smith
    Roberta Smith May 11, 2010

    What is the program you are trying to install ?


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Try the following regardless of the software as this is the common error message provided by Microsoft. Of course this won't rule out either a corrupt installer or incompatibility's

  1. Disable/Configure any anti-spyware or anti-virus software on your system during installation process. For example: Spybot Search and Destroy Program or Norton Anti-Virus
  2. Check to see if any spyware or adware is installed on your system blocking the completion of install process.
  3. Check to see if you find any unwanted entry in Add/Remove Programs or Internet Explorer - Add/On's section (Tools - Internet Options - Programs -> Manage Add On's). If you found one, remove/disable this entry.
  4. On Windows Vista, disable UAC (User Access Control) feature for your account

Posted on Aug 28, 2008

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When I try to install my Virgin Movile Broadband into the USB port, I am running Microsoft Windows XP Pro, I get "Error 1720 There is a problem with this Windows Installer package. A script required...

To get rid of this error, I would suggest you to install the latest version of Windows Installer which you can download it from the link:


Start the Windows Installer service.

1. Click Start, type Services.msc and press [ENTER]

2. Double-click Windows Installer.

3. Set the Startup type of Windows Installer to Manual.

4. Click Start to start the service. Note down the error message if any.

5. Click OK.


The Windows Installer CleanUp utility deletes all files and registry settings associated with a program's Windows Installer configuration.

Refer the article below which talks about the description of the Windows Installer CleanUp Utility:

Let me know if the above steps help you.

Jun 18, 2011 | Computers & Internet


How to install Google Earth & Google Ghrome on Windows 7

Many People like to use Google Earth to explore the world without leaving the comfort of their own homes.
Whether its just to explore a certain area or go on a sight seeing tour.

Now when you try to install Google Earth or Google Chrome on Windows 7 you will no doubt see this error "Google Earth installer error 0x8004071c"

This error is related to the installer package no being able to connect to the internet for updating purposes. Even older versions of the software wont install.

To get Google Earth or Google Chrome installed and working follow the instructions bellow.

Click on the start menu (orb) and in the text/search box type regedit and hit enter.
The registry editor will pop up, navigate through the registry by following this: HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>


When you have navigated to State, in the right hand pane you will see "ImageState" underneath "default".
Right click on ImageState and select Modify. A little box will pop up with text in the Value Data pane. Delete all of that text, leave it blank and click OK.


Close the registry editor and now your ready to install your Google software.

Happy virtual traveling or browsing.

In some cases older versions of the software won't install even if you have successfully performed the actions in this thread. You may get a error message.
If this is the case then check out an earlier thread of mine explaining how to get a program installed on Windows 7.

Click on link below >>>

on Jan 08, 2010 | Computers & Internet

1 Answer

I am trying to uninstall Cisco VPN and I get the windows installer error 1721, does anyone have any ideas on how to resolve this? thanks.

To resolvethis issue, perform the steps in the "Reregister the Windows Installer service" section. If youexperience the issue after you perform these steps, you may also have toperform the steps in the "Run System File Checker" section. Reregisterthe Windows Installer service loadTOCNode(2, 'resolution');The Windows Installer service manages the installation and removal ofprograms. The service applies a set of centrally defined setup rules during theinstallation process. These setup rules define the installation andconfiguration of the installed program. Windows Installer uses the Microsoftinstallation engine to install or remove programs. If the registration of theMicrosoft installation engine is corrupted, you may not be able to removeprograms that you have installed by using Windows Installer. In that case, youhave to unregister and reregister the Windows Installer service. To do this,follow these steps: Windows Installer
  1. Start your computer in Safe mode. To do this, follow these steps:
    1. Restart the computer.
    2. After the BIOS information is displayed, press F8.
    3. Use the DOWN ARROW key to select Safe Mode, and then press ENTER.
    4. Use the UP ARROW key and the DOWN ARROW key to select your computer, and then press ENTER.
  1. Log on to the computer as local administrator.
  2. Click Start, click Run, type cmd.exe, and then click OK.
  3. At the command prompt, type msiexec /unregister , and then press ENTER.
  4. At the command prompt, type msiexec /regserver, and then press ENTER.
  5. At the command prompt, type exit, and then press ENTER to close the command prompt.
  6. Remove the software program from Add or Remove Programs.

Jan 10, 2011 | Computers & Internet

1 Answer

When installing Java, at the end the message ''Error 1721. There is a problem with this windows Installer package''. A program required for this install to complete could not run. I've tried everything....

Try the steps laid out in this MS KB article about the installer service:

Reboot the computer, after it beeps start pushing F8. You should get a menu. Select Safe Mode and push enter.

Once Windows comes up click start and type in CMD (for Vista/7). Right-click cmd.exe and select "Run As Administrator". (For XP: click start then Run. Put in CMD and click OK).
Put in
msiexec /unregister

Then bring up the Run box again and put in
msiexec /register
Close the CMD box and reboot the PC, letting it boot as normal. Try the Java install process again. If it still doesn't work try the SFC command listed in the above KB article (which I can help with).

Jun 06, 2010 | Microsoft Windows Vista Home Premium...

2 Answers

Error 2350

THE PROBLEM The Windows Error 2350 occurs when the installed version of the Windows Installer is too old for the MSI to execute. The registration entry for the engine has been damaged and all attempts to execute the MSI installation packages will not be successful.Errors on your system may be caused by invalid registry entries and outdated or corrupt drivers.
THE SOLUTIONTo fix the registration entry for the Windows Installer, the Installer service should first be registered then unregistered using msiexec /unregister and msiexec /regserver (Type both command in run) or the command line switches. The user will then have to restart Windows.

Feb 12, 2010 | Microsoft Windows Vista Home Premium with...

2 Answers

Error i get when installing a certain program

Copy the entire program to a folder on the hard drive and try to launch it from there. When you are doing your copy go into folder options and make sure you show all hidden files before copying to the hard drive. Then go to the folder you copied it to and launch the setup.

Jan 15, 2009 | Microsoft Windows XP Professional

1 Answer

Cisco VPN Client for 32 bit vista

Download the latest version of the Cisco VPN Client. My version is

You can also try using the Microsoft "MSIZap" utility to ensure a clean uninstall. It is a command-line utility. You will need the original MSI install file from the Cisco VPN client to use MSIZap.

You can download it here:

Sep 22, 2008 | Microsoft Windows Vista Ultimate Edition

1 Answer

Error 1721

Okay, lets begin. First off you were trying to install .msi packages? Second how new is the computer? Third how much stuff do you have on the computer? Finally forth Have you had any spyware/ viruses? I need this information to continue troubleshooting.


Aug 31, 2008 | Microsoft Windows XP Professional With...

1 Answer

Error 1721

This page applys to XP,

but the solution should be similar. If you've done the registering, the next suspect would be something corrupt in your VPN package.

Try a fresh download or copy of it, and be sure you run as administrator during the install.

Jun 28, 2008 | Microsoft Windows Vista Ultimate Edition

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