error 1721. there is a problem with this installer package. a program required for this install to complete could not be run
error 1721. there is a problem with this installer package. a program required for this install to complete could not be run. contact your support personnel or package vendor. action dwus_un register.c
HoW Do I Fix This it is very annoying
Thank you for Visiting Windows Vista Community.
Do you get this error while installing any software on your Computer?
First, reregister the Windows Installer service on your Computer:
1. Start your computer in Safe mode. To do this, follow these steps:
a. Restart the computer.
b. After the BIOS information is displayed, press F8.
c. Use the DOWN ARROW key to select Safe Mode , and then press ENTER.
d. Use the UP ARROW key and the DOWN ARROW key to select your computer, and then press ENTER.
2. Log on to the computer as local administrator.
3. Click Start ,type cmd.
4. Right Click cmd.exe and select Run as Administrator
5. At the command prompt, type msiexec /unregister , and then press ENTER.
6. At the command prompt, type msiexec /regserver , and then press ENTER.
7. At the command prompt, type exit , and then press ENTER to close the command prompt.
Disable User Access Control and check if you can install successfully.
Here’s the step to disable and turn off UAC (User Access Control) feature for the logged on user account in Windows Vista (there are plenty more ways to disable UAC):
1.Click Start, and then click Control Panel.
2.In “Control Panel”, click User Accounts and Family Safety.
3.In the “User Accounts and Family Safety” window, click User Accounts.
If that does not work you can try running a SFC scan on your computer :
1. Open an elevated command prompt. To do this, click Start , click All Programs , click Accessories , right-click Command Prompt , and then click Run as administrator . If you are prompted for an administrator password or for a confirmation, type the password, or click Allow .
2. Type the following command, and then press ENTER:
The sfc /scannow command scans all protected system files and replaces incorrect versions with correct Microsoft versions
If none of the above steps work you need to uninstall existing Windows Installer using Windows Installer Clean up Utility and then install Windows Installer 4.5
Description of the Windows Installer Clean up Utility — http://support.microsoft.com/kb/290301/ —
Let us know how it works.
Regards,
Amritha — Microsoft support.
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 personnel or package vendor.
I have tried for two days every single solution that has been given on the internet but nothing works. I have a Acer Aspire 7735Z with Windows home premium. 32 bit. Service pack 2 is installed. The error keeps coming back when I try to install iTunes. It did work previously but for some reason it stopped. The error effects the reconizing of the iPod in iTunes. iTunes is installed but now when I try to open it hte following message appears:
the software required for communicating with ipods and mobile phones was not installed correctly. Do you want iTunes to repair this for you. Click yes, then the next message appers:
the software required for communicating with ipods and mobile phones could not be repaired. I have reinstalled iTunes, Quick time player. Did all the steps that Microsoft or Itunes asked me to do. Even went in to the Commant Prompt. Went for Check disc ect. Installed a earlier edition of iTunes. But it all keeps coming back to the same problem: error 1721. Any ideas??
I have installed the same iTunes on another pc and connected the iPod and that worked ok. So it is not the iPod or the software for iTunes..
Replies (4)
Hi M.kobessen,
1. Does this issue occur while installing all the programs or only with iTunes?
First you may try the steps provided in the below link.
Method 1:
Start the Windows Installer service
a. Click Start, type Services.msc and press
b. Double-click Windows Installer
c. Set the Startup type of Windows Installer to Manual
d. Click Start to start the service. Note down the error message if any.
e. Click OK.
Method 2: Unregister and re-register the Windows Installer to do that follow the steps provided below.
a. Click Start, click Run, type MSIEXEC /UNREGISTER, and then click OK. Even if you do this correctly, it may look like nothing occurs.
b. Click Start, click Run, type MSIEXEC /REGSERVER, and then click OK. Even if you do this correctly, it may look like nothing occurs, or you may briefly see an hourglass. After you run this command, the operation is complete.
c. Try your Windows Installer-based application again.
Method 3:
Try performing SFC scan on the computer.
SFC /scannow is a super-useful command you can use in any Windows version. When the SFC (System File Checker) command is used with the /scannow switch, the tool will scan all of the important Windows files on your computer and replace them as necessary.
Missing and corrupt operating system files (like many DLL files) are arguably the biggest cause of major Windows issues. Considering that, plus the fact that SFC /scannow is completely automatic and very easy to use, the tool should usually be one of your first troubleshooting steps.
Refer:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7
http://support.microsoft.com/kb/929833
Once SFC scan is done, try and install iTunes in administrator mode.
To install in administrator mode,
1. Locate the program icon, right-click click Run as administrator.
Thanks and Regards:
I. Suuresh Kumar — Microsoft Support.
itunes installation There is a problem with this windows installer package A program required for this install to complete could not be run contact your personnel or package vendor
I had itunes set up and working since i have had my computer. One day it asked to be updated, so i did. After it updated it stopped working because whenever i tried to open it it would say «this shortcut has either been deleted or moved would you like to delete this shortcut». This kept on happening so I uninstalled it and tried to reinstall it, but then comes my second problem. While itunes is downloading an error pops up saying «There is a problem with this windows installer package A program required for this install to complete could not be run contact your personnel or package vendor». This is my main problem and i don’t know how to stop it i have tried a disc clean up, De frag and trying to completely take everything to do with itunes off my computer, but it still doesn’t work. HELP ME. I NEED ITUNES
I had the same issue. The fix was simple. Try to uninstall all iTunes related items from your PC. In my case when I tried to uninstall Apple Software Update, I was presented with the «There is a problem with this windows installer package A program required for this install to complete could not be run contact your personnel or package vendor» error. I ran the Fix it solution at http://support.microsoft.com/mats/Program_Install_and_Uninstall. I had the Fix it app uninstall Apple Software Update. After the Fix it app successfully completed, I was able to install iTunes.
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I had itunes set up and working since i have had my computer. One day it asked to be updated, so i did. After it updated it stopped working because whenever i tried to open it it would say «this shortcut has either been deleted or moved would you like to delete this shortcut». This kept on happening so I uninstalled it and tried to reinstall it, but then comes my second problem. While itunes is downloading an error pops up saying «There is a problem with this windows installer package A program required for this install to complete could not be run contact your personnel or package vendor». This is my main problem and i don’t know how to stop it i have tried a disc clean up, De frag and trying to completely take everything to do with itunes off my computer, but it still doesn’t work. HELP ME. I NEED ITUNES
I had the same problem and spent hours trying to resolve. In the end it seems that you need to delete ALL the old itunes programs- quicktime, bonjour and anything that says apple. When i tried to do this using control panel- uninstall I got the same problm saying it couldnt be deleted. if you go to
and click the run icon, you can delete these programs one at a time- just follow the uninstall guide. Once ALL of these programs are completely gone, itunes installs as normal. Good luck!