Remove Wow Patch

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remove wow patch

This post demonstrates two removal methods in detail about how to uninstall World of Warcraft patch as well as its leftovers from computer. Read on this tutorial.

Uninstalling Patches

Individual patch for each update you re going to apply like below image for an example Wow patch list. 4. Ability to delete or rename files P. The subject of this.

Uninstalling a patch using Add/Remove Programs. With Windows XP, you can uninstall patches using Add/Remove programs. Uninstalling a patch using the.

World of Warcraft; Game Guide; Patch Notes; Patch 6.2 Fury of Hellfire; Patch 6.1 Garrisons Update; Patch 6.0 Warlords of Draenor; Patch 5.4 Siege of Orgrimmar;.

Beginning with Windows Installer 3.0, it is possible to uninstall some patches from applications. The patch must be an uninstallable patch. When using a Windows Installer version less than version 3.0, removing patches requires uninstalling the patch product and reinstalling the product without applying the patch.

Windows Installer 2.0:  Not supported. Patches applied using a version of Windows Installer that is earlier than Windows Installer 3.0 are not uninstallable.

When you invoke an uninstallation of a patch by any of the following methods, the installer attempts to remove the patch from the first product visible to the application or user requesting the uninstallation. The installer searches for patched products in the following order: per-user managed, per-user unmanaged, per-machine.

Uninstalling a patch using MSIPATCHREMOVE on a command line

You can uninstall patches from a command by using msiexec.exe and the Command Line Options. The following sample command line removes an uninstallable patch, example.msp, from an application, example.msi, using the MSIPATCHREMOVE property and the /i command line option. When using /i, the patched application can be identified by the path to the application s package . msi file or the application s product code. In this example, the application s installation package is located at server share products example example.msi and the application s ProductCode property is 0C9840E7-7F0B-C648-10F0-4641926FE463. The patch package is located at server share products example patches example.msp and the patch code GUID is EB8C947C-78B2-85A0-644D-86CEEF8E07C0.

Msiexec /I 0C9840E7-7F0B-C648-10F0-4641926FE463 MSIPATCHREMOVE EB8C947C-78B2-85A0-644D-86CEEF8E07C0 /qb

Uninstalling a patch using the standard command line options

Beginning with Windows Installer version 3.0, you can use the standard command line options used by Microsoft Windows Operating System Updates update.exe to uninstall Windows Installer patches from a command line.

The following command line is the standard command line equivalent of the Windows Installer command line used to uninstall a patch using the MSIPATCHREMOVE property. The /uninstall option used with the /package option denotes the uninstallation of a patch. The patch can be referenced by the full path to the patch or by the patch code GUID.

Msiexec /package 0C9840E7-7F0B-C648-10F0-4641926FE463 /uninstall EB8C947C-78B2-85A0-644D-86CEEF8E07C0 /passive

Note  The /passive standard option is not an exact equivalent of the Windows Installer /qb option.

Uninstalling a patch using the RemovePatches method

You can uninstall patches from script by using the Windows Installer Automation Interface. The following scripting sample removes an uninstallable patch, example.msp, from an application, example.msi, using the RemovePatches method of the Installer object. Each patch being uninstalled can be represented by either the full path to the patch package or the patch code GUID. In this example, the application s installation package is located at server share products example example.msi and the application s ProductCode property is 0C9840E7-7F0B-C648-10F0-4641926FE463. The patch package is located at server share products example patches example.msp and the patch code GUID is EB8C947C-78B2-85A0-644D-86CEEF8E07C0.

const msiInstallTypeSingleInstance 2

const PatchList EB8C947C-78B2-85A0-644D-86CEEF8E07C0

const Product 0C9840E7-7F0B-C648-10F0-4641926FE463

Set installer CreateObject WindowsInstaller.Installer

installer.RemovePatches PatchList, Product, msiInstallTypeSingleInstance,

Uninstalling a patch using Add/Remove Programs

With Windows XP, you can uninstall patches using Add/Remove programs.

Uninstalling a patch using the MsiRemovePatches function

Your applications can uninstall patches from other applications by using the Windows Installer Functions. The following code example removes an uninstallable patch, example.msp, from an application, example.msi, using the MsiRemovePatches function. A patch can be referenced by the full path to the patch package or the patch code GUID. In this example, the application s installation package is located at server share products example example.msi and the application s ProductCode property is 0C9840E7-7F0B-C648-10F0-4641926FE463. The patch package is located at server share products example patches example.msp and the patch code GUID is EB8C947C-78B2-85A0-644D-86CEEF8E07C0.

UINT uiReturn MsiRemovePatches

/ szPatchList /TEXT server share products example patches example.msp,

/ szProductCode / TEXT 0C9840E7-7F0B-C648-10F0-4641926FE463,

/ eUninstallType / INSTALLTYPE_SINGLE_INSTANCE,

Uninstalling a patch from all applications using MsiRemovePatches function

A single patch can update more than one product on the computer. An application can use MsiEnumProductsEx to enumerate all the products on the computer and determine whether a patch has been applied to a particular instance of the product. The application can then uninstall the patch using MsiRemovePatches. For example, a single patch can update multiple products if the patch updates a file in a component that is shared by multiple products and the patch is distributed to update both products.

The following example demonstrates how an application can use the Windows Installer to remove a patch from all applications that are available to the user.

It does not remove the patch from applications installed per-user for another user.

///////////////////////////////////////////////////////////////////

// RemovePatchFromAllVisibleapplications:

// wszPatchToRemove - GUID of patch to remove

UINT RemovePatchFromAllVisibleapplications LPCWSTR wszPatchToRemove

return ERROR_INVALID_PARAMETER;

WCHAR wszapplicationCode cchGUID 1 0 ;

DWORD dwapplicationSearchContext MSIINSTALLCONTEXT_ALL;

MSIINSTALLCONTEXT dwInstallContext MSIINSTALLCONTEXT_NONE;

// Enumerate all visible applications in all contexts for the caller.

// NULL for szUserSid defaults to using the caller s SID

uiStatus MsiEnumProductsEx / szapplicationCode /NULL,

// check to see if the provided patch is

// registered for this application instance

UINT uiPatchStatus MsiGetPatchInfoEx wszPatchToRemove,

if ERROR_SUCCESS uiPatchStatus

// patch is registered to this application; remove patch

wprintf L Removing patch s from application s n,

wszPatchToRemove, wszapplicationCode ;

UINT uiRemoveStatus MsiRemovePatches

if ERROR_SUCCESS. uiRemoveStatus

// This halts the enumeration and fails. Alternatively

// you could output an error and continue the

else if ERROR_UNKNOWN_PATCH. uiPatchStatus

// Some other error occurred during processing. This

// halts the enumeration and fails. Alternatively you

// could output an error and continue the enumeration

// else patch was not applied to this application

// ERROR_UNKNOWN_PATCH returned

while uiStatus ERROR_SUCCESS ;

if ERROR_NO_MORE_ITEMS. uiStatus

Patch Uninstall Custom Actions

It seems some people have been asking on how to revert their wow installation to the previous patch in this case into 2.1.3 from 2.2 patch, and still haven t.

remove wow patch