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What is error 1721..........How do I reinstall HP Updates?

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  • jjrb2277 Sep 04, 2008

    I am having the same problem... I have windows vista, and trying to install my HP critical updates... when I do I get the Error 1721 and it will not install updates. I did try to do updates straight from HP website and it did not work...even tried re-installation of windows installer 4.5, but that did not work... I am lost on what to do.... any help is appreciated.

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This is an error commonly witnessed when you try to uninstall a program using the "Add or Remove Programs" in Microsoft Windows XP. The message itself will read: "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."

I Googled your error and this is what I got. As far as your update question, I think you can just go to HP website, and redownload and reinstall all the updates that you are in need of. If you are speaking of Windows Updates, you can redownload those to. Just go to Microsoft website and in their search box, type in reinstall updates; of course, you will also have to type in there which updates you need to reinstall. Hope this helps.

Posted on Sep 04, 2008

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Am getting 1721 errors on my computer, can you tell me how i can fix it ?


Here you go. This is long winded but should fix you up.
Error 1721 is a common problem for many different Windows systems, shown when the installation you're trying to perform develops a problem and needs to be fixed. If you have this error, it's recommended that you're able to first fix any problems that could be inside your Windows system, and then cure the specific issues that the Windows Installer program has on your PC. This tutorial is going to show you exactly how to do that...
This error will typically show like this:

  • 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.

The problem with this error is actually caused by a very simple issue - the Windows Installer program that is used to install the various files & software onto your PC is actually damaged or corrupted & preventing your system from installing the program you want. This can be caused by a number of problems, including everything from having corrupt registry settings to the Installer program on your system being damaged. To fix this, you first need to make sure that Windows Installer is okay, and then get rid of any further system errors on your computer.
The first step to resolving this error is to "register" and "unregister" the Windows Installer on your system. This is a program which installs all the programs that you want onto your PC, and is constant on every Windows installation. The problem that often causes error 1721 is the way in which Windows often cannot read the Windows Installer program, because it's not "registered". Registering a program basically tells Windows where to look for it on your system, and it's often the case that this stored reference is either damaged or deleted by accident. To ensure this is not a problem, you need to be able to type the following into your system:

  • Load up "CMD" (click "Start" > Run > type cmd)
  • Type msiexec u/unregister
  • Type msiexec /register
  • Try reinstaling the program you wanted to

If you try this and find it does not work, then it's recommended you then use a program by Microsoft called the "Windows Installer Cleanup Utility". This is a new program which basically cleans up all the settings and options associated with the Windows Installer program; meaning that if you have any problems with the Windows Installer on your PC, they should be fixed. You may also wish to install Windows Installer 4.5, which will basically upgrade the Windows Installer program on your system, which should resolve many cases of the 1721 error.
It's also highly recommended that you use a "registry cleaner" to fix any of the errors that are on your Windows system. A registry cleaner is a type of software tool that basically scans through the registry database of your PC and fixes any of the problems that are inside it. The registry database contains all the settings, files and options for Windows, and is where everything from your most recent emails to your desktop wallpaper are kept. It's basically like a library for your system which is continually being used to help your software run correctly. Unfortunately, the registry is continually being damaged & corrupted, leading it to become highly ineffective and erroneous. To ensure this problem is not causing the 1721 error, you should clean through your system with a registry cleaner tool.

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My system did an automatic update. Now I get a message that says that my backweb-137903.exe has been moved and so my HP center does not load. I looked for the file but it is not present on my PC. I also...


This error message probably occurred, because a spyware removal application incorrectly detected the Updates from HP Connections or Compaq Connections client software (developed by BackWeb Technologies), as spyware and improperly removed it. Since only part of the client software was removed, the errors displays because the software cannot fully open when Windows starts. Updates from HP or Compaq Connections is a messaging service that comes pre-installed on HP and Compaq desktop computers. The service provides product notices, support updates, tips, and special offers specifically for your model of HP or Compaq PC. If you no longer want to use Updates from HP or Compaq Connections, HP or Compaq Connections can be uninstalled through Add/Remove programs. If you still want to use HP or Compaq Connections to receive information regarding your PC, complete the following steps: CAUTION: Performing a System Recovery replaces system files and original software with the files that originally came with the PC. This process may move or remove certain files, like those stored in My Documents. Before performing a System Recovery backup important files and the files stored in the My Documents folder.Be prepared to reinstall software that was not originally included with the PC. You will also need to reconfigure an Internet Connection and obtain all critical Windows Updates, Virus definition updates, and anti-spyware updates. To resolve this error, reinstall the Updates from HP/Compaq Connections client software by performing a standard recovery:
  1. Remove all connections from the PC except keyboard, mouse, monitor and power cable. If any internal hardware such as a video card, or sound card has been added, they should be removed or disconnected.
  2. Restart the computer and press the F10 repeatedly after the logo screen appears.
  3. Click Next when prompted.
  4. Read and respond to the screens to recover the computer.
After the computer is recovered and you have completed the setup, you can do any of the following items to prevent the error message from displaying:
  • Adjust the settings in the spyware removal application to bypass the Updates from HP or Compaq Connections client software.
  • You can uninstall the Updates from HP or Compaq Connections client software before using your spyware removal application: Uninstall Updates from HP or Compaq Connections client software by clicking Start , Control Panel , Add/Remove Programs , Updates from HP/Compaq Connections , and clicking the Remove button. NOTE: If you remove the Updates from HP or Compaq Connections client software, you should visit the product support page for your PC model, HP Support and Drivers Search , for the latest information and software updates.
HP does not consider HP or Compaq Connections spyware software. If spyware removal software detects BackWeb as spyware and you would still like to remove HP or Compaq Connections, it should not be removed through the Spyware removal software. Instead, uninstall BackWeb using Add/Remove Programs as shown above.

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Error 1721


What Is Error 1721? This is an error commonly witnessed when you try to uninstall a program using the "Add or Remove Programs" in Microsoft Windows XP. The message itself will read: "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."
Resolution #1: Reregistering the Windows Installer service It is known that if the Microsoft installation engine malfunctions or is internally corrupted, there is a possibly that you will not be able to remove programs that you used the Windows Installer, the service that administers the installation and configuration of programs, to install with. Thus, in the case of error 1721, it is necessary to unregister and then reregister the Windows Installer service to fix the corrupted parts of the engine. This can be accomplished through the Safe Mode by:
  1. Enter your computer in Safe Mode by:
    • Restarting the computer and pressing F8 after the BIOS information is shown
    • Select Safe Mode and Enter
    • Select your computer and Enter
  2. Log on as the local administrator
  3. Open up the command prompt by clicking Start, Run, and then typing cmd.exe and Ok
  4. At the command prompt, first unregister the service by typing msiexec /unregister and then hitting Enter
  5. Reregister the service by typing msiexec /regserver and then hitting Enter
  6. Type Exit to exit the command prompt safely
  7. Try to remove the program once again using Add or Remove Programs
I hope this helps you out. Thanks

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