Lỗi this installation package could not be opened

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We all have various third-party applications on our PCs, but sometimes issues while installing applications can occur.

According to lớn users, they are receiving the This installation package could not be opened error message while trying to lớn install certain applications.

Luckily, there are ways to fix it on Windows 10.

Steps to lớn fix installation package opening issues


Solution 1 – Make sure that the application is unblocked

Depending on your security settings, Windows 10 can sometimes block certain applications from installing, causing theThis installation package could not be opened error khổng lồ appear. To fix this problem, you just need to lớn find your setup file and unblock it. This is rather simple:

When the Properties window opens, go khổng lồ theGeneral tab và locate theUnblock checkbox at the bottom. Make sure that theUnblock option is checked.Now, clickApply & OK to save changes.If you see a confirmation message, clickContinue.

After unblocking your thiết đặt file, try to lớn run the application again. If you don’t have an Unblock option, it means that this tệp tin is already unblocked, so you’ll need lớn use a different solution.

Solution 2 – Temporarily disable your antivirus

Your antivirus is one of the most important applications on your PC, protecting you from unsafe & malicious files. It can also prevent certain files from running, however. If that happens, you can encounter theThis installation package could not be opened error message.

According khổng lồ users, you might be able khổng lồ fix this problem simply by disabling your antivirus software. After disabling your antivirus, try running the thiết lập file again and kiểm tra if the error message appears.

Keep in mind that Windows 10 comes with built-in antivirus with itsWindows Defender, so even if you disable your third-party antivirus your PC will remain safe.

If disabling your antivirus fixes the problem, you might want to check its configuration & try to find the cause of the problem.

On the other hand, if this error appears frequently, you might want to try updating your antivirus. In the worst-case scenario, you might need to lớn switch lớn a different antivirus software altogether.

Solution 3 – check if Windows Installer service is running

In order khổng lồ install any application, Windows Installer needs to lớn run. Sometimes, though, this service can become disabled which can cause theThis installation package could not be opened error.

To fix it, you need to lớn manually start Windows Installer. This is relatively simple:

Close Services window & try khổng lồ install the application again.

The installation process is closely related to Windows Installer service, so if you’re having this problem, be sure to kiểm tra if the aforementioned service is running.

Solution 4 – Modify your registry


According to lớn users, you might be able khổng lồ solve this issue simply by modifying your registry. Modifying the registry can be potentially dangerous và can lead lớn system instability, therefore we advise you khổng lồ be cautious.

To modify your registry, do the following:

Close Registry Editor.

After making the changes, try to lớn start the installation again.

If any new problems occur after changing your registry, you can restore it at any time simply by running the backup tệp tin that you created in Step 3.

Solution 5 – Create a new user account

According lớn users, you can fix theThis installation package could not be opened error simply by creating a new user account. Sometimes, your regular user trương mục might not have the necessary privileges or it might be corrupted, causing this problem khổng lồ occur.

To fix the issue, you need khổng lồ create a new user account và try to lớn install the application from that account:

After creating a new user account, log out of your current account and switch to lớn the new one.

Now, locate the thiết đặt file and try khổng lồ run it. If you manage khổng lồ install the application, you can go back khổng lồ your main account và try to lớn run it again.

After doing that, feel miễn phí to delete the newly created account since you won’t need it anymore.

A few users reported that this error occurs because they have a special character in their username.

Certain cài đặt files can’t handle special characters, so they will give you this error message. If that’s the case, you’ll have lớn create a new trương mục that has only alphanumeric characters in its name and use it lớn install the problematic application.

Solution 6 – Enable a hidden administrator account

If creating a new user tài khoản doesn’t fix the This installation package could not be opened error, you might need to enable the hidden administrator account. This is rather simple:

After Command Prompt opens, enter net user administrator /active:yes.Close Command Prompt.

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This will enable the hidden administrator account. Now, log out of your current account và switch khổng lồ the new administrator account. After doing that, locate the thiết lập file & try lớn install the application again.


If you manage lớn install the application, go back khổng lồ your main account.

After switching back to your main account check if the application is working properly.

If so, start Command Prompt as administrator and run thenet user administrator/active:no command lớn disable the administrator account.

Solution 7 – Move the setup file lớn the root directory

Sometimes, in order to fix theThis installation package could not be opened error, you need to lớn move your installation tệp tin to the root directory on your PC.

To bởi that, you just have khổng lồ locate the thiết lập file và move it to C: or any other root directory. After doing that, simply start the installation and it should work without any issues.

Keep in mind that you can move the setup file lớn any root directory on your hard drive.

Solution 8 – Create a .bat file

According khổng lồ users, you can fix this problem by creating a .bat file and using it to lớn run the installation. To vày that, follow these steps:

If this method works, you’ll have lớn use it every time this message appears.

Several users are also suggesting to make some adjustments to lớn your registry in order to lớn fix this problem. Before we start, we advise you khổng lồ back up your registry just in case.

We have to mention that this solution is potentially dangerous, so use it at your own risk. To lớn make these changes, vày the following:

Open Registry Editor. To lớn see how to kiểm tra Solution 4.When Registry Editor opens, navigate to lớn HKEY_CLASSES_ROOTMsi.Packageshell in the left pane. We recommend you export ashell key in case you need a backup. To see how to lớn export a key, kiểm tra Step 3 in Solution 4.Navigate khổng lồ Uninstall > command in the left pane và double-click (Default) in the right pane.Close Registry Editorand try to lớn install the application again.

This is a bit of an advanced solution, so you need to be extra cautious while performing steps 3 lớn 8.

As we already mentioned, it’s highly recommended you create a backup of your registry so you can easily restore it in case anything goes wrong.


Solution 9 – Try using a different browser

According khổng lồ users, theThis installation package could not be opened error can appear because your download is corrupted. Khổng lồ fix this problem, you need to download the cài đặt file again with a different browser.

Several users reported that this solution worked for them, so we highly recommend you try it out.

Solution 10 – Make sure that the thiết lập file is located on a local drive

Users reported that theThis installation package could not be opened error appears if your thiết đặt file is located on a network drive.

If that’s the case, simply move the setup file from a network drive & try to install it again.

Solution 11 – Re-register Windows Installer

You might be able to fix theThis installation package could not be opened error simply by re-registering Windows Installer. This is relatively simple:

Start Command Prompt as administrator.When Command Prompt opens, enter the following lines:msiexec /unregistermsiexec /regserverAfter running both commands, close Command Prompt.

After doing that, try lớn install the application again and kiểm tra if the problem is resolved.

Solution 12 – Change environment variables

You might be able lớn fix this problem simply by changing your environment variables. This is relatively simple, & you can bởi it by following these steps:

Repeat the same steps for the TMP variable & save changes.

After doing that, try lớn install the application again. If the problem persists, you might want lớn return environment variables lớn their mặc định values.

Solution 13 – Completely remove iTunes and QuickTime

According to users, they are getting this error when trying to install iTunes.

To fix the problem, you need khổng lồ uninstall iTunes & QuickTime. To do that, follow these steps:

Press Windows Key + I to open the Settings app.After removing the problematic applications, try installing iTunes again.

A few users reported that in order lớn fix the problem, you need to lớn delete all the files associated with iTunes và Quicktime, so be sure to do that as well. After, you should be able to install the application without any problems.

The This installation package could not be opened error can prevent you from installing new applications và even though this error can be a nuisance, you should be able to lớn solve it by using one of our solutions.