Windows Installer是一项核心服务，可管理Windows中所有内容的安装，包括应用程序、功能和许多其他内容。如果由于某种原因它中断了，您将被新安装甚至应用程序升级所困。

Windows安装程序^(Installer)(msiserver) 不工作

在这篇文章中，我们将分享一个错误代码列表——以及它们的解决方案，其中一些指向我们现有的解决方案——以及如何解决它们。

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

我们建议的第一件事是运行 程序安装和卸载疑难解答来修复由于注册表项损坏而阻止程序安装或删除的问题。该程序将修复 64 位操作系统上损坏的注册表项，这些注册表项控制更新数据、阻止现有程序完全卸载或更新的问题，以及阻止您通过添加^(Add)或删除程序^{(Remove Programs)}（或程序^(Programs)和功能^(Features)）在控制面板^{(Control Panel)}

2]启动^(Start)Windows安装程序^{(Windows Installer Service)}服务

在运行提示中，键入 MSIExec，然后按 Enter。

如果您看到Windows 安装程序^{(Windows Installer)}窗口，它告诉您有关MSIExec的所有信息，那么一切都很好。

如果出现错误，您可能必须手动启动它。

右键单击^{(Right-click)}任务栏，然后选择任务管理器^{(Task Manager)}。切换^(Switch)到服务^(Services)，并寻找msiserver。启动它。

您还可以运行services.msc以打开Windows 服务^{(Windows Services)}并转到Windows Installer，然后重新启动它。

3]无法访问Windows Installer服务^{(Windows Installer Service)}

您可能会看到消息Windows Installer Service 无法访问^{(Windows Installer Service could not be accessed)(Windows Installer Service could not be accessed)}。如果Windows 安装程序引擎^{(Windows Installer Engine)}损坏、安装不正确或被禁用，通常会发生这种情况。您将需要修复损坏或修复配置或启用它。链接的帖子还解决了Windows Installer服务无法启动的问题，并将消息显示为错误 5，访问被拒绝。^{(Error 5, Access is denied.)}

4]这个Windows Installer包有问题

如果Windows Installer包在卸载或安装过程中面临不稳定的网络访问，有时，如果您未能成功完成该过程，可能会出现错误。错误消息可能类似于“此 Windows Installer 程序包存在问题^{(There is a problem with this Windows Installer package)}。无法运行完成此安装所需的程序。请联系您的支持人员或包装供应商。” ^{(“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.” )}

5] Windows Installer不断弹出

通常，  Windows Installer 或 msiexec.exe在后台运行。您可以在正在运行的进程列表下的任务管理器中进行检查。^{(Task Manager)}但是，如果您看到它一直在运行，并且Windows Installer 不断弹出^{(Windows Installer keeps popping up)}，则意味着它被卡住了。安装可能无法完成，因此会发生这种情况。

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

6]安装包^{(Installation Package)}无法打开

如果您刚从网上下载的软件无法安装，并且一直提示“无法打开安装包^{(Installation Package could not be opened)}”，则可能是安全问题。Windows多次阻止您从 Internet 下载的应用程序，因为它不信任它们。您可能必须取消阻止它或禁用防病毒软件才能修复它。

7]重新注册Windows Installer服务

如果没有任何效果，根据我们的经验，最好的选择是重新注册Windows Installer服务。它之所以效果很好，是因为它还修复了注册表问题，并再次准备好基本设置。

以管理员权限启动命令提示符。键入以下命令并在每个命令后按Enter 。

%windir%\system32\msiexec.exe /unregister

%windir%\system32\msiexec.exe /regserver

%windir%\syswow64\msiexec.exe /unregister

%windir%\syswow64\msiexec.exe /regserver

关闭命令提示符，保存所有工作，然后重新启动计算机。

检查您是否面临Windows Installer问题。

Windows 操作系统维护一个Windows Installer 缓存。您安装的任何文件都会在此处临时提取，然后安装在 PC 上。如果您手动或在安装过程中从此处删除文件，或者任何其他程序正在这样做，您将收到错误消息。

有用的链接^{(Useful link)}：如何启用 Windows Installer 日志记录^{(How to enable Windows Installer logging)}。

Windows Installer not working properly in Windows 11/10

Windows Installer is a core service that manages installations of everything in Windows including apps, features, and many other things. If for some reason, it breaks, you will be stuck with new installations and even upgrades of apps.

Windows Installer (msiserver) not working

In this post, we will share a list of error codes – and their solution, some pointing to our existing solution – and how to solve them.

1] Run Program Install & Uninstall Troubleshooter

The first thing we would suggest is to run the Program Install and Uninstall Troubleshooter to repair issues that block program installation or removal because of corrupted registry keys. This program will fix corrupted registry keys on 64-bit operating systems, which control the update data, problems that prevent existing programs from being completely uninstalled or updated, and problems that block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel

2] Start the Windows Installer Service

In the Run prompt, type MSIExec, and then press Enter.

If you get the Windows Installer window which tells you everything about MSIExec, then it’s all good.

If you get an error, you might have to start it manually.

Right-click on the taskbar, and select Task Manager. Switch to Services, and look for msiserver. Start it.

You can also run services.msc to open Windows Services and go to Windows Installer, and restart it.

3] Windows Installer Service could not be accessed

You may see the message Windows Installer Service could not be accessed. This usually happens if the Windows Installer Engine is corrupted, installed incorrectly, or disabled. You will need to fix either the corruption or fix the configuration or enable it. The linked post also solves the issue where the Windows Installer service could not start, and gives the message as Error 5, Access is denied.

4] There is a problem with this Windows Installer package

If the Windows Installer package faces unstable network access during the uninstallation or installation process, sometimes, the error might appear if you fail to complete the process successfully. The error message might go like “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.” 

5] Windows Installer keeps popping up

Usually, the Windows Installer or msiexec.exe runs in the background. You can check in the Task Manager under the list of processes that are running. However, if you see it constantly running, and the Windows Installer keeps popping up, it means it is stuck. It is possible that an installation is not able to complete, and this happens as a result.

Read: Windows Installer Service missing.

6] Installation Package could not be opened

If you are not able to install a software which you just downloaded from the internet, and it keeps throwing error message “Installation Package could not be opened“, then it’s probably a security issue. Windows many a time blocks applications you download from the internet as it does not trust them. You may have to unblock it or disable your antivirus to fix it.

7] Re-register Windows Installer service

If nothing works, the best option in our experience is to re-register the Windows Installer service. The reason why it works great because it fixes registry issues as well, and gets the basic settings ready again.

Launch the command prompt with admin privileges. Type the following commands and hit Enter after each one.

%windir%\system32\msiexec.exe /unregister

%windir%\system32\msiexec.exe /regserver

%windir%\syswow64\msiexec.exe /unregister

%windir%\syswow64\msiexec.exe /regserver

Close the command prompt, save all your work, and restart your computer.

Check if you are facing Windows Installer issues.

Windows OS maintains a Windows Installer cache. Any files you install are temporarily extracted here and then installed on the PC. If you are deleting files from here manually or during installation or any other program is doing that, you will get an error.

Useful link: How to enable Windows Installer logging.

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