Windows 11/10 file mount failure problem solution: Fix the error.

If a user wants to back up their entire disk drive or a specific drive, they try to build an image copy that contains all the data, and that image file is called an ISO file or image.

Most Windows users when trying to mount these types of files on their system will be thrown an error window saying "Sorry, there was a problem mounting the file" and not allowing them to mount image file to extract its data.

There are many possibilities for such errors to occur on Windows systems, some of them are listed below.

• The ISO file may already be installed on the system.
• ISO files must be sparse.
• It may be blocked.
• ISO file read-only option is not selected.
• MicroSD cards inserted during installation may interfere with the system.

After taking into account all the factors given above, we have compiled a set of fixes that may resolve the issues you have been experiencing recently while mounting ISO files.

Fix 1 – Check if the ISO file is blocked and not set to read-only mode

When the ISO file downloaded from the Internet is blocked by the security tool on the Windows system. If it is blocked, it will usually throw an error message like this. Also, it's a good idea to check if the file is set to read-only mode. If not, set it to read-only mode.

Let’s look at some simple steps below.

Step 1: Right-click on the ISO file by browsing to the folder containing it.

Step 2: Click the "Properties" option in the context menu, as shown below.

Step 3: Make sure the General tab is selected.

Step 4: Then at the bottom, Verify that the Read Only checkbox is checked. If not, click the checkbox to check it.

Step 5: After that, also make sure that the UncheckBlock option is not checked.

Step 6: When finished, click Apply and then Click OK to make the changes and close the properties window.

#Now check if you are able to mount the ISO file.

Fix 2 – Remove sparse attributes from ISO files

Some files contain vulnerabilities, which means that some parts of the data are missing or empty and do not take up physical space on the disk. Therefore, this type of file can become sparse, causing problems when users try to mount or use this file.

Follow the steps given below to see how to remove it from your PC using Command Prompt.

Step 1: To open the run command box, please press the Win R key on the keyboard at the same time.

Step 2: Type cmd and fully press the CTRL SHIFT ENTER key.

Step 3: Click Yes at the UAC prompt to allow administrator privileges for the command prompt.

Step 4: This will open a command prompt window as administrator.

Step 5: Type the following command and press Enter to execute it.

fsutil 稀疏查询标志 D:\Software\Win11_English_x64v1.iso

Note: Replace D:\Software\Win11_English_x64v1.iso with the path to the ISO file on your system.

This will allow the user to know if the file is sparse.

Step 6: After you know whether the file is sparse or not, execute the following command to remove sparseness from the file.

fsutil 稀疏设置标志 D:\Software\Win11_English_x64v1.iso 0

Note: Replace D:\Software\Win11_English_x64v1.iso with the path to the ISO file on your system.

This will remove the sparse attributes from the ISO file.

Step 7: If these above commands are difficult for you to perform, copy and paste the ISO file into another folder.

Step 8: Then, try to mount the copied ISO file to see if it is normal now.

Fix 3 – Restart Windows Explorer on your system

Sometimes, a frozen Windows Explorer may create the above issue. Therefore, restarting Windows Explorer may resolve the issue on your system. We are showing you how to restart Windows Explorer using the steps given below.

步骤 1：同时按CTRL + SHIFT + ESC键打开系统上的任务管理器。

第 2 步：然后单击进程选项卡并右键单击Windows资源管理器应用程序。

第 3 步：从上下文菜单中显示的选项中单击重新启动。

第 4 步：这将重新启动Windows 资源管理器，然后关闭任务管理器。

现在验证是否可以挂载 ISO 文件。

修复 4 – 检查是否插入了任何 microSD 卡

一些 Windows 用户报告说，系统上主动存在的 microSD 卡会干扰安装过程。当他们从系统中移除 microSD 卡时，他们能够在系统上挂载 ISO 文件以提取其数据。

因此，我们强烈建议我们的用户从他们的系统中移除 microSD 卡，然后检查 ISO 文件现在是否可以成功挂载。

修复 5 – 确保 ISO 文件尚未安装

通常我们倾向于重复一些事情，因为我们忘记了它是否已经完成。因此，用户很可能已经安装了 ISO 文件并且不知道或忘记了它。因此，请确保 ISO 文件未安装在系统上。如果完成，您可以直接从这台电脑打开它，而不是尝试挂载文件。

修复 6 – 使用注册表编辑器修复磁盘映像驱动程序

警告 –在继续之前，请尝试参考本文导出系统的注册表文件。因为如果由于文件中的更改而对系统造成任何损坏，您可以恢复到注册表文件。

步骤 1：右键单击任务栏中心的蓝色开始按钮。

第 2 步：通过从列表中单击它来选择运行，如下图所示。

第 3 步：在运行命令框中键入regedit ，然后按Enter键打开注册表编辑器。

注意：如果有任何UAC 提示，请单击是接受。

第4步：打开后，通过将其复制粘贴到地址栏并按Enter键浏览到下面给出的路径。

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

第 5 步：在编辑器的右侧，按住CTRL键的同时单击它们来选择UpperFilters和LowerFilters 。

第 6 步：然后，同时按下 DELETE键，然后在确认窗口中单击“是”以删除这些字符串值。

第 7 步：删除后，关闭注册表编辑器并重新启动系统。

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