如果您在Windows计算机上安装、卸载或更新程序时收到错误消息并且无法完成安装，那么您可能会对本文感兴趣。

修复 Windows 安装程序包^{(Fix Windows Installer Package)}错误

您可能会收到以下任何错误消息：^(es:)

• 无法启动 Windows Installer 服务。

• 无法访问 Windows Installer 服务。

• 无法在本地计算机上启动 Windows Installer 服务。

如果Windows 安装程序引擎^{(Windows Installer Engine)}已损坏、安装不正确或被禁用，则可能会发生这种情况。在这种情况下，您可能需要尝试以下一个或多个故障排除步骤：

1]以管理员身份登录

请确保您以管理员^{(Administrator)}身份登录。如果没有以管理员^(Admin)身份登录并重试。

2] msiexec 是否打开？

打开命令提示符窗口，键入msiexec并按Enter。如果下面的窗口打开，很好。

如果您收到错误消息，请记下错误消息并尝试在Internet上进行搜索。

顺便说一句，您将能够在此处看到所有命令行开关。顺便说一句，如果不指定至少一个开关，就无法运行 msiexec.exe 程序。

3]检查Windows Installer^{(Check Windows Installer)}服务状态

打开services.msc并确保将Windows Installer 服务^{(Windows Installer service)}设置为Manual。如果没有启动，请启动后重试^{(please start it and try again)}。

4]重新注册^{(Re-register)}Windows^{(Windows Installer)} Installer引擎

打开命令提示符窗口，依次键入以下命令，然后按 Enter：

msiexec /unregister

msiexec /regserver

这将重新注册Windows Installer引擎。

5 ]卸载^{(] Uninstall)}并重新安装程序

如果您尝试使用更新版本更新计算机上的软件程序，请先卸载该程序的先前版本，然后安装更新版本。

6]运行程序安装^{(Run Program Install)}和卸载疑难解答^{(Uninstall Troubleshooter)}

运行程序安装和卸载疑难解答。此工具是已停产的Windows Installer Cleanup 实用程序的替代品 。此工具将帮助您修复Windows Installer^{(Windows Installer)}的潜在问题。

具体来说，它将解决以下问题：

1. 阻止新程序安装、卸载或更新的问题
2. 与这些问题相关的损坏的注册表项。

此疑难解答适用于Windows 10/8.1/8/7。

7]运行系统文件检查器

运行系统文件检查器，如果要求重新启动，然后重试。

阅读^(Read)： 缺少 Windows 安装程序服务^{(Windows Installer Service missing)}。

8]重置Windows Installer服务注册表^{(Reset Windows Installer Service Registry)}设置

将Windows Installer 服务注册表^{(Windows Installer Service Registry)}设置重置为其默认值。下载KB2642495中提到的此注册表修复程序并将其添加到您的注册表中。在应用此注册表修复之前，请先创建系统还原点。^{(system restore point)}

对于Windows 64 位用户，打开注册表编辑器^{(Registry Editor)}并导航到以下项：

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIServer

在右窗格中选择WOW64 REG_DWORD 条目。

右键单击^{(Right-click)}WOW64条目^(WOW64)并选择Modify。

将 Decimal 值从 1 更改为0，然后按 OK 并重新启动系统。

相关阅读：^{(Related reads:)}

1. 在 Windows 上安装软件时访问被拒绝错误
2. Windows Installer 总是随机弹出
3. 无法打开此安装包^{(This installation package could not be opened)}。
   

想知道如何让 Windows Installer 在安全模式下工作吗？^{(Want to know how to make Windows Installer work in Safe Mode?)}

The Windows Installer Service could not be accessed or started

If when you install, uninstall, or updаte a program on a Windows computer, you receivе an error message and you are unable to complete thе installation, then this article may interest you.

Fix Windows Installer Package errors

You could receive any of the following error messages:

• Windows Installer Service couldn’t be started.

• The Windows Installer Service could not be accessed.

• Could not start the Windows Installer service on Local Computer.

This could happen if the Windows Installer Engine is corrupted, installed incorrectly, or disabled. In such a case, you may want to try one or more of the following troubleshooting steps:

1] Log in as Administrator

Please ensure that you are logged in as Administrator. If not log in as Admin and try again.

2] Does msiexec open?

Open a command prompt window, type msiexec and hit Enter. If the following window opens, fine.

If you receive an error message instead, note down the error message and try to search for it on the Internet.

Incidentally, you will be able to see all the command-line switches here. One cannot, by the way, run the msiexec.exe program without specifying at least one switch.

3] Check Windows Installer service status

Open services.msc and ensure that the Windows Installer service is set to Manual. If it is not started, please start it and try again.

4] Re-register the Windows Installer engine

Open the command prompt window and type the following commands one after the other and hit Enter:

msiexec /unregister

msiexec /regserver

This will re-register the Windows Installer engine.

5] Uninstall & reinstall the program

If you are trying to update a software program on your computer with an updated version, uninstall the previous version of that program first, and then install the updated version.

6] Run Program Install and Uninstall Troubleshooter

Run the Program Install and Uninstall Troubleshooter. This tool is the replacement for Windows Installer Cleanup utility which was discontinued. This tool will help you fix potential issues with Windows Installer.

Specifically, it will fix the following problems:

1. Problems that prevent new programs from being installed, uninstalled or updated
2. Corrupted registry keys that are related to these issues.

This troubleshooter works on Windows 10/8.1/8/7.

7] Run System File Checker

Run System File Checker, reboot if asked for and try again.

Read: Windows Installer Service missing.

8] Reset Windows Installer Service Registry settings

Reset the Windows Installer Service Registry settings to its default values. Download this registry fix mentioned in KB2642495 and add it to your registry. Do create a system restore point first before applying this registry fix.

For Windows 64-Bit users, open Registry Editor and navigate to the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSIServer

Select WOW64 REG_DWORD entry in the right pane.

Right-click on WOW64 entry and select Modify.

Change the Decimal value from 1 to 0 and press OK and reboot the system.

Related reads:

1. Access is Denied error while installing software on Windows
2. Windows Installer keeps popping up randomly
3. This installation package could not be opened.
   

Want to know how to make Windows Installer work in Safe Mode?

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