How to fix “sorry, there was a problem mounting the file”?

Several users report receiving the “Sorry, there was a problem mounting the file” when trying to mount a tệp tin on Windows server 2012 R2, Windows 7, Windows 8.1 or Windows 10. The issue is only reported khổng lồ occur with the built-in ISO mounter.

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Sorry, there was a problem mounting the file.

What is causing the “Sorry, there was a problem mounting the file” error

We investigated this particular issue by looking at various user reports & the repair strategies that they used to get the issue resolved. Based on what we gathered, there are several common scenarios that will trigger this particular error message:

Internet-downloaded ISO tệp tin is blocked – This is the most common reason why the error message occurs in the first place. If you downloaded the tệp tin over the Internet, a Windows security feature might have blocked it.The ISO file is already mounted – Another common reason why this error occurs is if the ISO tệp tin is already mounted by Windows. Keep in mind that with certain procedures, Windows might mount the ISO automatically as soon as the tải về completes.MicroSD thẻ is interfering with the mounting – A couple of affected users have reported that for them the issue was occurring due to a MicroSD memory thẻ that was inserted.ISO file is not set to lớn Read Only – Keep in mind that the built-in disk imaging utility will have trouble mounting the ISO tệp tin if it doesn’t have a read-only flag. Reports suggest that the initial verifications are specifically looking for that.The disk imaging driver is corrupted – This is known khổng lồ happen quite often on Windows 7 và Windows 8. Several affected users have managed khổng lồ repair it lớn a working state using Registry Editor.ISO tệp tin has the sparse attribute set – This scenario is typically reported to lớn occur on Windows 10 and Windows server 2012. Several users have managed to resolve the issue by removing the sparse attribute.

If you’re currently struggling lớn resolve the “Sorry, there was a problem mounting the file” error, this article will provide you with a selection of verified troubleshooting steps. Below you have several methods that other users in a similar situation have used to lớn resolve or circumvent the issue.

For the best results, follow the methods below in order until you encounter a fix that resolves the problem in your particular scenario. Let’s begin.

Method 1: Verifying if the ISO is already mounted

Before trying anything else, it’s important khổng lồ ensure that the ISO file that is triggering the error is not already mounted. Quite a few of users that were struggling with the“Sorry, there was a problem mounting the file” error discovered that the reason it was not working is that the file was already mounted.

Apparently, with certain ISO files Windows will automatically mount the drive at the kết thúc of the procedure. This is known khổng lồ occur on Windows 8.1. So, with this in mind, xuất hiện File Explorer và see if the ISO file is already mounted.

Check if the ISO tệp tin is already mounted

If it isn’t, move down to the next method below.

Method 2: Making a copy of the ISO & mounting it

The most popular fix for this particular error message is khổng lồ make a copy of the ISO file và mount it using the same built-in Windows mounter. Several users encountering the same error have reported that the error is no longer occurring with the new ISO copy.

So, in order to circumvent the error message, simply right-click the ISO tệp tin that is giving yourtroubles và chooseCopy. Although there is no official explanation why this method was successful for so many people, Windows users speculate that it’s probably because creating a new copy of the ISO file get’s rid of the blocked property that was preventing the ISO from being mounted. Essentially, the sparse flag is avoided when creating a copy of the file.

Copying the ISO file

Next, right-click on an empty space (in a different or the same location) and choose Paste,then wait for the process lớn finish. Once you have two versions of the same ISO, right-click on the copied version & choose Mount.

Mounting the copied file

The mounting process should complete without the“Sorry, there was a problem mounting the file” error.

If this method didn’t allow you to lớn resolve the error message, move down khổng lồ the next method below.

Method 3: Unblocking the ISO file

Another way to lớn go around resolving this issue is lớn unblock the file using file Explorer. Several users encountering the same error message have reported that the error was resolved in their case after they unblocked Internet-downloaded files.

Here’s what you need to do:

Open tệp tin Explorer & navigate khổng lồ the location of the ISO file.Select the ISO file & press Alt + Enter to open up the Properties menu. You can also right-click on it and choose Properties.

Right-click and choose Properties or select and press alt + EnterIn the Properties window of the ISO file, go khổng lồ the General tab and kiểm tra the Unblock box associated with Security & hit Apply khổng lồ confirm the changes.Unblocking the ISO fileAttempt lớn mount the tệp tin again và see if the procedure is successful.If you’re still seeing the “Sorry, there was a problem mounting the file” error, move down to the next method below.

Method 4: Removing the microSD card

Another verified reason why the“Sorry, there was a problem mounting the file” error occurs is if you have an active microSD card when you’re trying to lớn mount an ISO file. On Windows 7 và Windows 8.1, this is reported to lớn interfere with the mounting procedure, producing the error message.

If this scenario is applicable to lớn your current situation, simply remove the microSD card from your computer & see if the error message is resolved.

If you’re still encountering the same error message when you try lớn mount the ISO file with the built-in disk imaging utility, move down to the next method below.

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Method 5: Setting the ISO tệp tin to Read-Only

Some users struggling lớn resolve the same error message have reported that the issue was resolved entirely on Windows 7 & Windows 8.1 after they modified the properties of the ISO tệp tin to specify that it’s Read-only.

Apparently, the built-in disk imaging software will specifically look for this tag whenever it needs lớn mount the file. If the tag is missing, you might encounter the “Sorry, there was a problem mounting the file” error.

Here’s a quick guide on setting the Read-Only tag to your ISO file:

Navigate to lớn the location of your ISO file, right-click on it & choose Properties. You can also select it và press Alt + Enter khổng lồ reach the same screen.

Accessing the Properties screen of the ISO fileIn the Properties screen of the ISO file, go to lớn the General tab và make sure that the Read-only checkbox (next to lớn Attributes) is checked. Then, click Apply to lớn save the changes.Enabling the Read-Only tagMount the image again & see if you’re still facing the same error message. If you are, move down khổng lồ the next method below.

Method 6: Repairing the disk-imaging driver with Registry Editor

Several users encountering the same error message have managed khổng lồ resolve the issue after discovering that the issue was caused by the disk imaging driver (some registry problems related lớn it). Some affected users were able to resolve the issue by using Registry Editor to repair the integrity of the registry keys.

Note: This guide has only been confirmed to lớn work with Windows 7 and Windows 8.1.

Here’s a quick guide on how to vày this:

Press Windows key + R to mở cửa up a Run dialog box. Then, type “regedit” và press Enter to xuất hiện Registry Editor. When prompted by the UAC (User tài khoản Control), press Yes khổng lồ grant admin privileges.

Run dialog: regeditLet’s start by creating a registry backup just in case things don’t go our way. To bởi this, in Registry Editor, go to lớn File > Export.

Export” width=”311″ height=”284″> Go to file > ExportNext, save your backup somewhere convenable, give it a name và make sure that the Export range is set khổng lồ All.

Creating a registry backupNote: In case you ever need to use the backup that we’ve just created, go to lớn File > Import và select the backup file.Once the backup has been created, use the navigation pane (left pane) to arrive at the following registry subkey:HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass4D36E965-E325-11CE-BFC1-08002BE10318Once you get there, move over to lớn the right- pane, right-click on UpperFilters & choose Delete.

Deleting the UpperFilters string valueNote: bởi vì not delete the UpperFilters.bak registry.Right-click on LowerFilters & choose Delete.

Deleting the LowerFilters valueClose Registry Editor và restart your computer.At the next startup, see if the issue has been resolved by attempting khổng lồ mount the ISO tệp tin again with the built-in imaging disk utility.

Method 7: Removing the sparse attribute

If you’ve come this far without a result, it’s very likely that the ISO tệp tin is not mounting correctly because it has the sparse attribute set. This is typically reported to lớn occur on Windows Server and Windows 10.

If this scenario is responsible for the“Sorry, there was a problem mounting the file” error, you can fix it by removing the sparse attribute. This can be done by either doing things manually or using a freeware utility. Follow whichever guide seems more convenable to your current situation.

Using Remove Sparse lớn delete the sparse attribute set

If you decide khổng lồ go with the route that involves using a GUI, follow the guide below lớn install and use Remove Sparse:

Open the Remove Sparse.reg & click Run at the Security Warning.

Running the .reg fileAfter clicking Yesat the UAC (User tài khoản Control) prompt, click Yes at the Registry Editor prompt lớn operate the required changes khổng lồ the Registry.

Operating the changes to lớn the RegistryOnce the operation is complete, simply right-click the ISO file. You should now have the option lớn Remove Sparseif the ISO file still has the sparse attribute set.

Removing the sparse attribute

Using an elevated Command Prompt to remove the sparse attribute

Another way lớn go around resolving the problem is to lớn recreate the functionality added by the .reg file above from an elevated Command Prompt. Here’s what you need lớn do:

Press Windows key + R to open up a Run dialog box. Then, type “cmd” & press Ctrl + Shift + Enter to xuất hiện up an elevated Command Prompt with administrative privileges.

Run dialog: cmdWhen prompted by the UAC (User trương mục Control), click Yes to grant administrative privileges.In the elevated command prompt, type or paste the following command & press Enter (but be careful khổng lồ replace the placeholders with your own):fsutil sparse setflag PathToISO 0 fsutil sparse queryflag PathToISONote: Keep in mind that PathToISO is merely a placeholder for the actual location of the ISO file. Replace it with the full location in your particular situation.If this method didn’t enable you lớn resolve the“Sorry, there was a problem mounting the file” error, move down khổng lồ the next method below.

Method 8: Using a 3rd party application

If you’re you are prepared khổng lồ let go of the disk-imaging utility, you can use a 3rd các buổi party disk imaging utility lớn mount the ISO file. Several users encountering the same error message have managed khổng lồ circumvent the issue by using an external solution.

Here’s a quick guide on avoiding the error tệp tin by mounting the ISO file with Daemon tools:

Open the installation executable and follow the on-screen prompts khổng lồ install a Free license of Daemon Tools.

Installing Daemon tools FREEWhen asked if you want to install theStorage controllers, click the Install button.

Installing the Storage ControllersOnce the installation is complete, right-click on the Daemon Tools icon in the taskbar & choose Mount.

Mounting the iso image with Daemon toolsUse the navigation window to navigate to lớn the location of the ISO that you’re trying to lớn mount. Then, select the ISO file & click Open.

Open ISO fileThe ISO tệp tin should be mounted momentarily. This way, you’ll be able to circumvent the“Sorry, there was a problem mounting the file” error.