An Error Occurred During the Installation of Assembly Component


So you got a new laptop this Thanks Giving Day, and you’re trying to install your favorite program that pops up an error every time you attempt to install it? Don’t worry; we’re here to help you tackle this issue.

An error occurred during the installation of assembly component

Download the Diagnostic

There are certain situations when missing entries in your registry and registry corruption causes this problem. Try running a registry scan to identify if there are any such issues.

  1. Click the button below to download and install the Diagnostic
  2. Perform a Registry scan and fix any problems detected.
  3. Restart your computer.

Estimated Download Time: 10 Seconds

Verify System Requirements

Check the system requirements of the application you’re trying to install. It may be possible that the application does not support your operating system, or it is designed for a different system type, for example, you’re trying to run an application designed for a 64-bit operating system on a 32 bit PC.

Repair Microsoft .NET Framework

During installation of the program, Microsoft .NET Framework is being used for copying new files, registering COM components and filling Registry information. You’re encountering an error due to the corrupted installation of Microsoft .NET Framework.

1. Open up the list of all installed programs by typing “Change or remove a program” in Search Box.


2. Right-click Microsoft .NET Framework from installed programs list; and choose “Uninstall/ Change” option.

3. In the new wizard that appears, select “Repair or reinstall this program” option, click Next.

Delete Temporary Internet Files

Check the state of your temporarily downloaded web files. Delete them if they are corrupted. You can do so using Internet Properties dialog as shown below:

1. Using Windows Key + R open the Run box and type “inetcpl.cpl”, click OK.


2. In the new dialog, click Delete button under Browsing History category of the General tab.


3. Check-up all the boxes in subsequent dialog, and then click Delete again.

Delete Setup Extracted Contents

Using Command Prompt as administrator, run the command given below to automatically remove all temporary files extracted by setup bootstrapper during the installation.

1. Type “CMD” in Search; right click that and select “Run as administrator” option.

2. In the Command Prompt window, type below commands in sequence:

  • CD C:\Windows\Temp
  • Del*.tmp


3. After completion, type “EXIT” and press ENTER.

Change Windows Installer Startup Type

Go to the Services program and change the Startup type of Windows Installer service.

1. In the Run box, type “Services.msc” and click OK.

2. In the new window that opens, right-click “Windows Installer” service; choose Properties.

3. Set the Startup Type: Automatic


4. Stop and restart the service by clicking respective buttons.

5. Click Apply, and then OK. Do reboot your PC.

Check Installation Folder Permissions

The directory you’re trying to install may not have sufficient privileges to copy new files. Edit the security permissions of that folder using Folder Properties dialog box.

1. Open File Explorer; go to the parent folder containing installation folder.


  • C:\Program Files (x86)\
  • C:\Program Files\

2. Right-click the subfolder you’ve chosen for installation. Select Properties.


3. Click Security tab, click Edit, and provide full control, modify, read & execute, list folder contents, read, write and special permissions.

4. Click OK twice.


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