在安装或卸载时修复错误 2502 和 2503： ^{(Fix Error 2502 and 2503 while installing or uninstalling: )}好吧，如果您在尝试安装新程序或卸载现有程序时遇到错误 2502/2503 内部错误，那么您来对地方了，因为今天我们将讨论如何解决此错误。安装或卸载程序时出现的错误 2502 和 2503 似乎是由于Windows的^(Windows)Temp文件夹的权限问题引起的，该文件夹通常可以在 C: Windows Temp中找到。

这些是您在安装或卸载程序时可能遇到的错误：

• 安装程序在安装此软件包时遇到意外错误。这可能表明此软件包有问题。错误代码为 2503。
• 安装程序在安装此软件包时遇到意外错误。这可能表明此软件包有问题。错误代码为 2502。
• 未标记为进行中时调用 RunScript
• 没有进行安装时调用InstallFinalize。

虽然问题不仅限于此原因，有时病毒或恶意软件、不正确的注册表、损坏的Windows 安装程序^{(Windows Installer)}、不兼容的第 3 方程序等也可能导致错误 2502/2503。因此，不要浪费任何时间，让我们看看如何在下面列出的故障排除指南的帮助下在Windows 10中安装或卸载程序时实际修复错误 2502和 2503。^{(Fix Error 2502)}

^{(Fix Error 2502)}在安装或卸载时修复错误 2502和 2503

确保 创建一个还原点^{(create a restore point)} 以防万一出现问题。

专业提示：^{(Pro Tip:)}尝试通过右键单击运行应用程序，然后选择Run as Administrator。

方法一：重新注册 Windows Installer^{(Method 1: Re-register Windows Installer)}

1.按Windows Key + R然后键入以下内容并按 Enter：msiexec /unreg

2.现在再次打开运行对话框并键入msiexec /regserver并按 Enter。

3.这将重新注册Windows Installer。重新启动^(Reboot)您的 PC 以保存更改。

方法 2：运行 CCleaner 和 Malwarebytes^{(Method 2: Run CCleaner and Malwarebytes)}

执行全面^(Full)防病毒扫描以确保您的计算机是安全的。除了这个运行CCleaner和Malwarebytes Anti-malware。

1.下载并安装 CCleaner  &  Malwarebytes。

2.运行 Malwarebytes^{(Run Malwarebytes)} 并让它扫描您的系统以查找有害文件。

3.如果发现恶意软件，它将自动删除它们。

4.现在运行 CCleaner  ，在“Cleaner”部分的“ Windows ”选项卡下，我们建议检查以下要清理的选项：

5.一旦您确定检查了正确的点，只需单击 Run Cleaner， 然后让 CCleaner 运行。

6.要清理您的系统，请进一步选择注册表^(Registry)选项卡并确保选中以下内容：

7.选择Scan for Issue并允许CCleaner扫描，然后单击 Fix Selected Issues。

8.当CCleaner 询问“您要备份对注册表的更改吗？^{(Do you want backup changes to the registry?)}” 选择是。

9.备份完成后，选择Fix All Selected Issues。

10.重新启动您的 PC 以保存更改，这应该 会在安装或卸载程序时修复错误 2502 和 2503。^{(Fix Error 2502 and 2503 while installing or uninstalling a program.)}

方法 3：使用命令提示符运行具有管理员权限的安装程序^{(Method 3: Run Installer with Admin rights using Command Prompt)}

1.打开文件资源管理器然后单击 View > Options并确保选中“显示隐藏的文件、文件夹和驱动程序。^{(Show hidden files, folders, and drivers.)}”再次^(Again)在同一窗口中取消选中“隐藏受保护的操作系统文件（推荐）。^{(Hide protected operating system files (Recommended).)}“

2.单击应用，然后单击确定。

3.按Windows Key + R然后键入以下内容并按 Enter：

C:\Windows\Installer

4. 右键单击​​空白区域并选择View > Details.

5.现在右键单击写入名称、类型、大小等^{(Name, Type, Size etc)}的列栏，然后选择更多。^(More.)

6.从列表复选标记主题，然后单击确定。

7.现在从列表中找到您要安装的正确程序。^{(correct program)}

8.按Windows Key + X，然后选择命令提示符（管理员）。^{(Command Prompt (Admin).)}

9. 现在输入以下内容并按 Enter：

C:\Windows\Installer\Program.msi

注意：而不是程序.msi键入导致问题的.msi文件的名称，如果该文件位于Temp文件夹中，那么您将键入它的路径并按Enter。

10.这将以管理权限运行安装程序，您不会遇到Error 2502/2503。

11.重新启动您的 PC 以保存更改，这应该在安装或卸载程序时修复错误 2502 和 2503。^{(Fix Error 2502 and 2503 while installing or uninstalling a program.)}

方法 4：以管理员权限运行 Explorer.exe^{(Method 4: Run Explorer.exe with administrative privileges)}

1.同时按下Ctrl + Shift + Esc键打开任务管理器^{(Task Manager)}。

2.找到Explorer.exe然后右键单击它并选择结束任务。^{(End Task.)}

3.现在点击File > Run新任务并输入Explorer.exe。

4.勾选使用管理权限创建此任务，^{( Create this task with administrative privileges)}然后单击确定。

5.再次尝试安装/卸载之前出现错误 2502 和 2503 的程序。

方法 5：为 Windows Installer 文件夹设置正确的权限^{(Method 5: Set correct permissions for Windows Installer Folder)}

1.打开文件资源管理器然后单击View > Options并确保选中“显示隐藏的文件、文件夹和驱动程序。^{(Show hidden files, folders, and drivers.)}”再次^(Again)在同一窗口中取消选中“隐藏受保护的操作系统文件（推荐）。^{(Hide protected operating system files (Recommended).)}“

2.单击应用，然后单击确定。

3.现在导航到以下路径：C:\Windows

4.查找安装程序文件夹^{(Installer folder)}，然后右键单击它并选择属性。^{(Properties.)}

5.切换到安全选项卡^{(Security tab)}，然后单击权限^{(Permissions.)}下的编辑。^(Edit)

6.接下来，确保选中系统和管理员的^{( System and Administrators.)}完全控制。^{(Full Control)}

7.如果没有，则在组或用户名下^{(group or user names)}一一选择它们，然后在权限下勾选完全控制。^{(Full Control.)}

8.单击应用，然后单击确定。

9.重新启动您的 PC 以保存更改。

这应该可以在安装或卸载程序时修复错误 2502^{(Fix Error 2502)}和 2503，但如果您仍然卡住，请按照Windows Installer文件夹的方法 6 中列出的步骤进行操作。

方法 6：为临时文件夹设置正确的权限^{(Method 6: Set Correct Permissions for Temp Folder)}

1.在文件资源管理器^{(File Explorer)}中导航到以下文件夹： C:\Windows\Temp

2.右键单击临时文件夹^{(Temp folder)}并选择属性。^{(Properties.)}

3.切换到安全^(Security)选项卡，然后单击高级。^(Advanced.)

4.单击添加按钮^{(Add button)}，将出现权限条目窗口^{(Permission Entry window)}。

5.现在单击“选择主体^{(Select a principal)}”并输入您的用户帐户。

6.如果您不知道您的用户帐户名称，请单击高级。^(Advanced.)

7.在打开的新窗口中单击立即查找。^{(Find now.)}

8.从列表中选择您的用户帐户^{( your user account from)}，然后单击确定。^{(click OK.)}

9. （可选）要更改文件夹内所有子文件夹和文件的所有者，请在“高级安全设置”^{(Advanced Security Settings)}窗口中选中“替换子容器和对象的所有者^{(Replace owner on subcontainers and objects)}”复选框。单击确定^{(Click OK)}更改所有权。

10.现在您需要为您的帐户提供对文件或文件夹的完全访问权限。再次右键单击文件或文件夹，单击属性，单击安全^(Security)选项卡，然后单击高级^(Advanced)。

11.单击添加按钮^{( Add button)}。“权限输入”窗口将出现在屏幕上。

12.单击“选择委托人^{(Select a principal)}”并选择您的帐户。

13.将权限设置为“完全控制^{(Full control)}”并单击“确定”。

14.对内置管理员组重复上述步骤。^{(Administrators group.)}

15.重新启动您的 PC 以保存更改。

为你推荐：^{(Recommended for you:)}

• 启动时用光标修复黑屏^{(Fix Black Screen With Cursor On Startup)}
• 修复 Windows 检测到硬盘问题^{(Fix Windows detected a hard disk problem)}
• 6 种修复 Windows 商店无法打开的方法^{(6 Ways To Fix Windows Store Won’t Open)}
• 如何修复 Chrome 无法打开或启动^{(How to Fix Chrome Won’t Open or Launch)}

就是这样，您在Windows 10中^{(Windows 10)}安装或卸载程序时已成功修复错误 2502 和 2503，^{(Fix Error 2502 and 2503 while installing or uninstalling a program)}但如果您对这篇文章仍有任何疑问，请随时在评论部分询问。

Fix Error 2502 and 2503 while installing or uninstalling

Fix Error 2502 and 2503 while installing or uninstalling: Well, if you are getting error 2502/2503 internal error when trying to install a new program or uninstalling an existing program then you are at the right place as today we are going to discuss how to resolve this error. The error 2502 and 2503 while installing or uninstalling a program seems to be caused because of permissions issue with the Temp folder of Windows which can be usually found in C:\Windows\Temp.

These are the error you may encounter while installing or uninstalling a program:

• The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2503.
• The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2502.
• Called RunScript when not marked in progress
• Called InstallFinalize when no install in progress.

While the issue is not limited to this cause as sometimes virus or malware, incorrect registry, corrupt Windows Installer, incompatible 3rd party programs etc can also cause the error 2502/2503. So without wasting any time let’s see how to actually Fix Error 2502 and 2503 while installing or uninstalling a program in Windows 10 with the help of below-listed troubleshooting guide.

Fix Error 2502 and 2503 while installing or uninstalling

Make sure to create a restore point just in case something goes wrong.

Pro Tip: Try to run the application by right-clicking and then select Run as Administrator.

Method 1: Re-register Windows Installer

1.Press Windows Key + R then type the following and hit Enter: msiexec /unreg

2.Now again open the run dialog box and type msiexec /regserver and hit Enter.

3.This would re-register the Windows Installer. Reboot your PC to save changes.

Method 2: Run CCleaner and Malwarebytes

Perform a Full antivirus scan to make sure your computer is secure. In addition to this run CCleaner and Malwarebytes Anti-malware.

1.Download and install CCleaner & Malwarebytes.

2.Run Malwarebytes and let it scan your system for harmful files.

3.If malware is found it will automatically remove them.

4.Now run CCleaner and in the “Cleaner” section, under the Windows tab, we suggest checking the following selections to be cleaned:

5.Once you’ve made certain the proper points are checked, simply click Run Cleaner, and let CCleaner run its course.

6.To clean your system further select the Registry tab and ensure the following are checked:

7.Select Scan for Issue and allow CCleaner to scan, then click Fix Selected Issues.

8.When CCleaner asks “Do you want backup changes to the registry?” select Yes.

9.Once your backup has completed, select Fix All Selected Issues.

10.Restart your PC to save changes and this should Fix Error 2502 and 2503 while installing or uninstalling a program.

Method 3: Run Installer with Admin rights using Command Prompt

1.Open File Explorer then click View > Options and make sure to check “Show hidden files, folders, and drivers.” Again in the same window uncheck “Hide protected operating system files (Recommended).“

2.Click Apply followed by OK.

3.Press Windows Key + R then type the following and press Enter:

C:\Windows\Installer

4.Right click in an empty area and select View > Details.

5.Now right click on the column bar where Name, Type, Size etc is written and select More.

6.From the list check mark subject and click OK.

7.Now find the correct program which you want to install from the list.

8.Press Windows Key + X then select Command Prompt (Admin).

9.Now type the following and hit Enter:

C:\Windows\Installer\Program.msi

Note: Instead of the program.msi type the name of the .msi file causing the problem and if the file is located in Temp folder then you would type it’s path and press Enter.

10.This would run the installer with administrative rights and you would not face the Error 2502/2503.

11.Reboot your PC to save changes and this should Fix Error 2502 and 2503 while installing or uninstalling a program.

Method 4: Run Explorer.exe with administrative privileges

1.Press Ctrl + Shift + Esc keys together to open Task Manager.

2.Find Explorer.exe then right-click on it and select End Task.

3.Now click on File > Run new task and type Explorer.exe.

4.Check mark Create this task with administrative privileges and click OK.

5.Again try to install/uninstall the program which was earlier giving the error 2502 and 2503.

Method 5: Set correct permissions for Windows Installer Folder

1.Open File Explorer then click View > Options and make sure to check “Show hidden files, folders, and drivers.” Again in the same window uncheck “Hide protected operating system files (Recommended).“

2.Click Apply followed by OK.

3.Now navigate to the following path: C:\Windows

4.Look for Installer folder then right-click on it and select Properties.

5.Switch to Security tab and click Edit under Permissions.

6.Next, make sure Full Control is checked for System and Administrators.

7.If not then select them one by one under group or user names then under permissions check mark Full Control.

8.Click Apply followed by OK.

9.Reboot your PC to save changes.

This should Fix Error 2502 and 2503 while installing or uninstalling a program but if you’re still stuck then follow the steps listed under method 6 for Windows Installer folder also.

Method 6: Set Correct Permissions for Temp Folder

1.Navigate to the following folder in File Explorer: C:\Windows\Temp

2.Right-click on Temp folder and select Properties.

3.Switch to Security tab and then click Advanced.

4.Click Add button and the Permission Entry window will appear.

5.Now click “Select a principal” and type in your user account.

6.If you don’t know your user account name then click Advanced.

7.In the new window that opens click Find now.

8.Select your user account from the list and then click OK.

9.Optionally, to change the owner of all sub folders and files inside the folder, select the check box “Replace owner on subcontainers and objects” in the Advanced Security Settings window. Click OK to change the ownership.

10.Now you need to provide full access to the file or folder for your account. Right-click the file or folder again, click Properties, click the Security tab and then click Advanced.

11.Click the Add button. The “Permission Entry” window will appear on the screen.

12.Click “Select a principal” and select your account.

13.Set permissions to “Full control” and Click OK.

14.Repeat the above steps for the built-in Administrators group.

15.Reboot your PC to save changes.

Recommended for you:

• Fix Black Screen With Cursor On Startup
• Fix Windows detected a hard disk problem
• 6 Ways To Fix Windows Store Won’t Open
• How to Fix Chrome Won’t Open or Launch

That’s it you have successfully Fix Error 2502 and 2503 while installing or uninstalling a program in Windows 10 but if you still have any questions regarding this post then feel free to ask them in the comment’s section.

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