Setup can not uninstall Windows XP because the necessary registration information is missing

You might encounter this error message when you attempt to use the c:\windows\system32\osuninst.exe command and either of the following conditions exists on your computer:

  • The Undo folder isn’t present on the system.
  • The Win9xundodirpath and Win9xundointegrityinfo registry values are not present in the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup registry subkey.

The Undo folder is typically located at the root of the C: drive and contains hidden and system attributes. To view the folder from the recovery console or command prompt, you need to type

dir /ahs

or set the folder permissions by typing

attrib -sh c:\undo

If the folder is missing, you can’t uninstall the OS.

If the registry information is missing, try restoring a previous registry backup. Again, if this information is missing, you won’t be able to uninstall the OS.

How to remove Office from a machine that is not cleanly uninstalling?

Microsoft has an Office Scrub tool. This tool can be used to remove all elements of Office from a machine even in instances where Office is not available from Add/Remove programs. To download Office Scrub navigate to https://support.microsoft.com/en-us/kb/971179 and download the version required based on your version of Office and Operating System.

Once downloaded you will have an OffScrub<version>.vbs file. If you run with no arguments then you will be prompted for which components to remove however it’s also possible to use in an unattended mode. For example to uninstall Office 2010 use:

cscript OffScrub10.vbs ALL /Quiet

How to uninstall built-in applications from Windows 10 that don’t have an uninstall options

A number of the Windows applications (Universal applications) in Windows 10 have no uninstall option however they are still just AppX packages installed on the OS so can be viewed and removed using PowerShell.

Launch an elevated PowerShell session and then run command:

Get-AppxPackage *<part of package name>* | Remove-AppxPackage

To remove. For example to remove the built-in Mail and Calendar applications I use:

Get-AppxPackage *communi* | Remove-AppxPackage

To view all the packages use:

Get-AppxPackage | ft Name, PackageFullName -AutoSize

Some common ones you may wish to uninstall are listed below with the part of package name to use:

  • Camera – *camera*
  • Mail and Calendar – *communi*
  • People – *people*
  • Money, Sports, News, Travel, Health, Food and Weather – *bing* or to just remove certain ones use *bingsports*, *bingtravel* etc. Use ‘Get-AppxPackage *bing* | ft Name, PackageFullName -AutoSize’ to view the names
  • Groove Music and Movies & TV – *zune*
  • Xbox – Why? :-) *xbox*
  • Solitare – *solit*
  • 3D Builder – *3d*

The Add/Remove Programs is missing

Programs can be installed and uninstalled from the control panel on Windows operating systems. If the add and remove program icon is missing in the control panel,it will not be possible to use this feature. Without add or remove programs,it becomes difficult to uninstall programs in a clean manner. It is simple to fix this problem. Theadd and remove program icon can be missing in the control panel because of a damaged or missing applet required for this feature. The applet is present in the form of a command in the Windows system folders and it needs to be run once to solve the issue.
This can be due to a missing or damaged file – Appwiz.cpl

This applet is stored under the name appwiz.cpl in the system 32 folder.

  • First, open the Start menu and click Run.
  • Then, in the open window, type: appwiz.cpl

Place saving updates obtained through the Windows Update

All updates that you download or install through the Windows Update are stored in the folder:  \ Windows \ SoftwareDistribution \ Download, and in subfolders inside it. After installing the update, you can save them on your computer by simply copying the folder the file you want. Files containing in its name -express, can not re-install. Therefore, you should not copy them.

Opening the Add/Remove Programs dialog takes too much time

Some users notice that opening the Add/Remove programs window takes a lot of time. The window itself opens, but it’s building the list that takes so long.

It can take long for following reasons:
1. You have really a lot of installed software
2. Your hardware is slow(especially HDD)
3. If the program doesn’t provide this information itself, Add/Remove Programs is forced to guess – with 1 and 2 it can takes really a lot of time.A program can add some properties to its registration to avoid a lot of this guessing. So please ask software developers to do it :-)
software for internet casino

So best way is using our Windows Extension for removing programs without additional steps

Seven Ways to Remove Desktop Programs and Modern Apps in Windows

1. Uninstall Desktop Applications from the Control Panel

This is the method known by most people. It works great for all desktop applications but it cannot be used for modern Windows 8.1 apps that are distributed through the Windows Store.

First go to “Control Panel -> Programs -> Programs and Features”.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

Then, select the application you want to remove, click or tap Uninstall and follow the wizard.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

2. Uninstall Programs Using their Uninstall Shortcuts

Most desktop applications, when installed, create at least an Uninstall shortcut. This is generally found in the application’s folder in the Start Menu (in Windows Vista, Windows 7, etc) or in the Apps view, that’s accessible from theStart screen (in Windows 8.1).

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1Uninstall shortcuts are sometimes also placed on the Desktop. Double-click on them to start the uninstall procedure.

3. Uninstall Programs Using their Uninstall.exe

Many programs (especially those which create Uninstall shortcuts) have an executable file named uninstall.exe or something along these lines. This file is always found in the installation folder of that application.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

Run it and follow the steps required to uninstall the program.

4. Uninstall Programs Using Their Setup MSI File

Some programs (like the 64-bit version of 7-Zip) do not use a setup.exe file for their installation. Instead their setup file has the extension “.msi”. This format is used by the Windows Installer, a special installation format created by Microsoft for its Windows operating systems.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

The desktop applications that use an “.msi” installer are very easy to uninstall. You right click on their setup file and click Uninstall.

The removal can also be triggered from the command line. Open the Command Prompt as administrator and type“msiexec /x “ followed by the name of the “.msi” file used by the program you want to remove.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

You can also add other command line parameters to control the way the uninstall is done. For more information, check this article from Microsoft: Msiexec (command-line options).

5. Uninstall Windows 8.1 Apps and Desktop Programs from the Start Screen

All the methods covered so far apply only to traditional desktop applications. But what about Windows 8.1 apps? How do you remove those?

One way is to right click or press and hold on their tile, to bring up the contextual menu on the bottom. Then, pressUninstall. The app is then removed in a few seconds without other prompts and confirmations. If an app no longer has a tile on the Start screen, simply search for it, right click or press and hold on the appropriate search result and then press Uninstall.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

On classic PCs without a touchscreen, Windows 8.1 displays a traditional right-click menu when you right click the tile of a modern app. As expected, this menu includes the Uninstall option.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

You can do the same with desktop applications. However, you are taken to the Programs and Features window inControl Panel, from which you can start the uninstall.

6. Remove Windows Store Apps from PC Settings

In Windows 8.1, you can also use PC Settings to remove modern apps from the Windows Store. Open PC Settings and go to Search and apps and then to App sizes.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

On the right, you will see a list with all the apps that are installed on your device. Select the one you want to remove and the Uninstall button is displayed.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

Click or tap Uninstall and then again on Uninstall to confirm that you want to remove the app.

remove, uninstall, programs, apps, Windows Store, Windows 7, Windows 8.1

7. Use a Specialized Software Uninstaller

There are programs that can be used to cleanup other programs. Some even remove leftovers from the uninstall process, both files and registry entries.

How to troubleshoot Windows Installer errors

When you install, uninstall, or update a program on a Windows-based computer, you may receive one of the following error messages.

Error message 1
The Windows Installer Service could not be accessed.
Error message 2
Windows Installer Service couldn’t be started.
Error message 3
Could not start the Windows Installer service on Local Computer. Error 5: Access is denied.
Solution
To determine whether you’re using an account that has administrator rights
To determine whether you’re using an account that has administrator rights, use one of the following methods, as appropriate for the operating system that you’re running.

Windows 7 and Windows Vista
  1. Open the Date and Time dialog box.
    1. Click Start.
    2. Type the following command in the Start Search or Search programs and files box, and then press Enter:
      timedate.cpl

      The Date and Time dialog box appears.
      The screen shot for this step

  2. Click Change date and time. When the User Account Control dialog box appears, click Continue.
    The screen shot for this step
  3. Do one of the following, depending on what happens when you click Continue:
    • If your computer does not prompt you for a password, you are already logged on with an administrator account. Click Cancel two times to close the Date and Time dialog box. You are ready to fix the Windows Installer issues.
    • If your computer prompts you for a password, you are not logged on with an administrator account.
Windows XP and Windows Server 2003
  1. Open the Date and Time dialog box.
    1. Click Start, and then click Run.
    2. Type the following command in the Run dialog box, and then press OK:
      timedate.cpl
      The screen shot for this step
  2. Do one of the following, depending on the result:
    • If the Date and Time Properties dialog box appears, you are already logged on as an administrator. ClickCancel to close the dialog box.
      The screen shot for this step
    • If you receive the following message, you are not logged on as an administrator:
      The screen shot showing the message appears if you are not logged on as an administrator

After you’ve verified that you’re logged on to your computer as an administrator, you can start troubleshooting Windows Installer issues.

Identify Windows Installer issues

If the Windows Installer engine is corrupted, disabled, or installed incorrectly, this may cause program installation issues.

Use the following methods to identify any Windows Installer issues that may be causing problems when you install, uninstall, or update programs.

Method 1: Determine whether the Windows Installer engine is working
  1. Click StartStart button, type cmd in the Search box or click Run then type cmd in the dialog (Windows XP or Windows Server 2003), and then press Enter to open a Command Prompt window.
  2. At the command prompt, type MSIExec, and then press Enter.
  3. If the MSI engine is working, you should not receive any error messages. If you receive an error message, enter the error message text into a search engine such as Bing or Google to locate troubleshooting information about the issue.
  4. Try to install or uninstall again.
Method 2: Make sure that the Windows Installer service is not set to Disabled
  1. Click StartStart button, type services.msc in the Search box or click Run then type services.msc in the dialog (Windows XP or Windows Server 2003), and then press Enter to open Services.
  2. Right-click Windows Installer, and then click Properties.
  3. If the Startup type box is set to Disabled, change it to Manual.
  4. Click OK to close the Properties window.
  5. Right-click the Windows Installer service, and then click Start. The service should start without errors.
  6. Try to install or to uninstall again.
Method 3: Check your version of Windows Installer, and upgrade to the latest version if necessary

Important This method applies to Windows XP, Windows Vista, Windows Server 2003, Windows Server 2003 R2, and Windows Server 2008 only.

  1. Click StartStart button, type cmd in the Search box or click Run then type services.msc in the dialog (Windows XP or Windows Server 2003), and then press Enter to open a Command Prompt window.
  2. At the command prompt, type MSIExec, and then press Enter. If the MSI engine is working, you should not receive any error messages, and a separate dialog box should open. This shows the MSI version.
  3. If the installer is not version 4.5, download and install Windows Installer 4.5.
  4. Try to install or to uninstall again.
Method 4: Reregister the installer engine

Important This method applies to Windows XP and to Windows Server 2000 only.

  1. Click Start, click Run, type cmd, and then click Command Prompt.
  2. At the command prompt, type the following, and then press Enter after each line:
    MSIExec /unregister

    MSIExec /regserver

  3. Try to install or to uninstall again.

Fix that installation or update process was not completed successfully

The installation or update method doesn’t run to completion

There are several methods that can be used to install, to uninstall, or to update a program. Additionally, the method or methods that are used may not have started or completed successfully. In this situation, try some other method to install, or to update the program.

The following are common methods that are used to install software:

  • Insert the CD or DVD media, and then let the installation auto-start.
  • Browse to the CD, DVD, removable media, or other location where the programs installation files are stored, and then double-click the Setup program. The setup file is typically one of the following:
    • Autorun or Autorun.exe
    • Setup or Setup.exe
    • Install or Install.exe
  • Click Run when you download the program from a website.

The installation media is unreadable

Installation media such as CD and DVD media may be dirty or scratched and therefore be unreadable by the CD or DVD reader. To resolve this issue, follow these methods:

Method 1: Clean the CD or DVD

To do this, use a CD or DVD disc-cleaning kit. Or, use a soft, lint-free cotton cloth to gently wipe the silver side of the disc. Do not use paper cloth, as this can scratch the plastic or leave streaks. When you clean the disc, wipe from the center of the disc outward. Do not use a circular motion. If the problem continues to occur, clean the disc by using a damp cloth or a commercial CD or DVD disc-cleaning solution. Dry the disc thoroughly before you insert it into the drive.

Method 2: Copy the installation files to your computer or to other removable media

When you do this, note the location, and then run the installer from that location. The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you’re not sure, check the Readme file in the folder for instructions about how to run the installation process. If an executable file (.exe) is available, we do not recommend that you run .msi files directly without specific instructions from the vendor.

Note If multiple CDs or DVDs are required, we recommend that you copy all the disks to the same folder, in reverse order (higher disk numbers first). Be prepared to approve the overwriting of existing files if you are prompted, and then install from that location.

Method 3: Obtain a fresh version of the installation package

If you tried to install from a CD or DVD, do the following:

  • Check the software manufacturer’s website for a more recent version of the software package. Download and install the new version.
  • If you already have the latest version, download the program from the manufacturer’s website, and then run the installation.

Downloaded or copied installation files are corrupted

Method 1: Copy the installation files to your computer

Copy the installation files to a local hard disk on your computer or to other removable media. Note the location, and then run the installation from that location. The installation file is typically named Autorun.exe or Setup.exe, but this may vary. If you’re not sure, check the Readme file in the folder for instructions about how to run the installation. If an executable file (.exe) is available, we do not recommend that you run .msi files directly without specific instructions from the vendor.

  • If you are installing a program from the Internet, redownload the file (select Save instead of Run in the download dialog box), save the file to a folder on a local hard disk on your computer or to other removable media. Then, run the installation from that location.
  • If your installation files are on a network (for example, a commercial or corporate environment), copy all the files to a folder on a local hard disk on your computer, and then run the installation from that location.
Method 2: Obtain a fresh version of the installation package

If some time has elapsed between when you downloaded the package and when you tried to install it, do the following:

  • Check the software manufacturer’s website for a more recent version of the software package. Download and install the new version.
  • If you already have the latest version, download the program again, and then run the installation.

Programs that are currently running on your computer are interfering with the installation process

Disable programs that might be interfering with the installation process. To do this, follow these steps:

  1. Click StartStart button, type msconfig in the Search box, and then click msconfig.exe.

    User Account Control permission If you are prompted for an administrator password or confirmation, type the password, or provide confirmation.

  2. On the General tab, click Selective startup, and then clear the Load startup items check box.
  3. Click Services, click Hide all Microsoft services, and then click Disable all.
  4. Click OK, and then click Restart.
  5. Try running your software program installation.
  6. When you are finished troubleshooting the problem, restart the computer in Normal Startup mode. To do this, follow these steps:
    1. Click StartStart button, type msconfig in the Search box, and then click msconfig.exe.

      User Account Control permission If you are prompted for an administrator password or confirmation, type the password, or provide confirmation.

    2. On the General tab, click Normal startup, click OK, and then click Restart.

Fix that a program wasn’t uninstalled successfully

There are typically several ways to remove any program. In this situation, try some other method to remove the program.

The following are common methods that are used to install software:

Method 1: Use the uninstall option (if available)
  1. Click StartStart button, and then click All Programs.
  2. Select the folder for the program that you are trying to uninstall, and then open the folder.
  3. If there is an uninstall option, try using it.
Method 2: Use Control Panel options
  1. Click StartStart button, click Control Panel, click Add and Remove Programs or Programs and Features, and then click Uninstall a program.
  2. Select the program, and then click Uninstall. Follow the instructions.

How to Add or remove (Uninstall) programs on Windows 8 and Windows Server 2012:

1. Right-click at the screen’s bottom-left corner and from the pop-up menu choose “Control Panel“.

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2a. If your view is by: Category, open “Uninstall a program” under “Programs” group.

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2b. If your view is by: Small Icons, open “Programs and Features” option.

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3.Select the program or application you want to be removed and choose “Uninstall/Change”.
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