Cleaning the Windows Installer Folder In Windows 10, is it safe to delete it?

If you have been using your Windows for a long time without reformatting, you have surely noticed that the folder C: Windows Installer se It has grown into a jumbo size folder and has gotten even bigger over time. This can be a serious problem if your Windows system is on a fairly small size SSD hard drive. The folder is reported to grow to a massive 50GB or sometimes even more. So the question is, it is safe to delete or clean the Windows Installer folder ? How should we deal with the huge Windows Installer folder?

Delete or clean the Windows Installer folder in Windows 10

Well, it is not safe to delete the entire Windows Installer folder because the system uses some of the files it contains to function properly in Windows 10. Some other guides will generally tell you to identify and remove the MSIs and MSPs that you no longer need. files in the installer folder, which is a bit difficult and troublesome. In this guide, instead of doing that, we will show you how to create a symlink of the installer folder on another drive to save a ton of disk space on your system drive.

Create a symbolic link for the Windows Installer folder to save space

August 2019 update, read : After recent Windows updates, it seems that creating a symbolic link or directory junction for the Windows Installer folder would cause an installation problem like ‘ The system cannot open the specified device or file – Error 2755 “, Especially when you run an” .msi “installer. It is recommended that you avoid creating symbolic links for the installer folder for now until it is safe to do so. However, you can try to do it and revert the changes (following the guide in the next paragraph below) if you run into any installation problems.

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If you have already implemented the symbolic link or directory join for the installer folder and run into an installation problem, you can revert the changes by first copying the installer folder back to C: Windows (as the same names cannot coexist , temporarily rename the copied folder to something like “Installer – Copied”). Then run the command “rmdir / s / q C: Windows Installer” and rename the folder “Installer – Copied” previously renamed to “Installer”.

By creating a symbolic link for the Windows Installer folder, it means that we will first copy the Windows Installer folder to another drive (for example, from C: to D 🙂 where there is more free space. Then we will remove the original installer folder from the directory of Windows and we will create a symbolic link from the Windows directory to the installer folder that you previously copied to another drive.

Works as a shortcut to the folder , which means you can have the actual folder on another drive, but it will work as if the folder was there on the original system drive after creating the symbolic link. Note that a symbolic link is different from a shortcut. Simply creating a shortcut to the installer folder will not work and possibly cause serious problems.

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If you still don’t understand how it works, don’t worry. We’ll show you a detailed step-by-step guide on how to do it below.

However, as we have mentioned before, deleting the installer folder can damage your Windows. Since deleting the folder is a procedure in this guide, if you did it wrong, your Windows may still be damaged. Then, do this at your own risk .

Step 1: Show Windows Installer Folder

First of all, the installer folder is hidden by default (not missing), even with the “Show hidden files and folders” option enabled. To allow Explorer to view the folder, in Windows 10 File Explorer, go to Watch in the top menu. Please select Choices , later Change folder and search options . Click on the tab Watch and then uncheck the option » hide protected operating system files (recommended) «. Also, make sure that the option » Show hidden files, folders, and drives »Is enabled.

Step 2: copy the installer folder to another drive

Now that you can see the installer folder in the Windows directory, copy the entire Windows Installer folder to another drive of your choice. For example, from C: Windows Installer to D: Important Windows Installer . This copying process can take a long time depending on how massive your installer folder is.

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Recommended step – Make one more copy of the installer folder elsewhere as a backup in case something goes wrong.

Step 3: Create the symbolic link using CMD

Once the copy is done, go to the start menu or Cortana, find Symbol of the system or CMD and later run it as administrator . At the elevated command prompt, enter the following commands each line at a time. Note : You must replace the drive letter and / or folder path in the commands if your Windows folder is in a different path.

rmdir / s / q C:  Windows  Installer

The above command is to delete the C: Windows Installer directory and delete the folder entirely.

mklink / DC:  Windows  Installer D:  Importante  Windows  Installer

After the first command completes successfully, run the second command as shown above to create the symbolic link of C: Windows Installer to D: Important Windows Installer .

That’s it. The “shortcut” for the Windows Installer folder is now created and a ton of disk space is freed up on the system drive. From now on, any requests for files in the installer folder will be diverted to those on the D: drive.

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