Manual actions to uninstall Windows Theme installer An unhandled exception occurred in your application

July 14, 2020 by Henry Alderson


The following are some simple ways to solve the problem of an unhandled exception from the Windows Installer in your application.

TIP: Click on this link to repair Windows errors and increase system performance.

What is an unhandled exception? An exception is the known type of error. An unhandled exception occurs when application code does not properly handle exceptions. For example, when you try to open a file on your hard drive, a problem often occurs when the file does not exist.



Since installing Windows 7 shell themes is always difficult for some, I developed an installer with one that installs Windows 7 shell themes and can replace many system files. Installing designs is a little more work, but much less than installing them manually!

windows theme installer unhandled exception has occurred in your application

How does it work? Windows 7 theme installer with can replace system files and apply Windows 7 themes with a few clicks.

Easy Replacement Of System Files

If you are using the 64-bit version of Windows 7, you can even insert 32-bit files that will be copied to SysWOW64 (sometimes it is necessary to install Windows 7 shell themes).

Integrated Theme Manager (beta):

Experienced Users Can Replace Other System Files

If you are an experienced user, you can create a shortcut and add an advanced option (only advanced, not advanced), and you can replace even more system files:

Download The Portable Theme Installer For Windows 7 (beta)

Windows 7 Theme Installer under the license Creative Commons Attribution-NonCommercial - Non-Commercial License. No exported NoDerivs 3.0 license. Exchange is allowed only subject to a link to our site. Free for private use.

Step 1 Run this program only as an administrator (right-click on .exe, run it as administrator)
Step 2, you MUST fix UXtheme.dll files, otherwise this tool will not work. Find out more here. Step 3 Close all other programs before installing themes (highly recommended!)
Step 4 After installing the theme, click the "Apply" button (!), Otherwise it will not work Step 5 Before using this tool, it is recommended that you install a system restore point and / or make backup copies of the original system files. Step 6 Use SFC.exe to restore the original system files. Find out more here. Step 7 This is a beta version and may contain errors. Please sign in at
8. StepUse at your own peril and risk! (This program modifies system files)
Step 9 Download only themes from trusted sites

June 2021 Update:

We now suggest using this software program for your issue. Also, Reimage repairs typical computer system errors, defends you from file loss, malicious software, computer system failures and optimizes your Pc for maximum performance. You can fix your Pc challenges swiftly and prevent others from happening by using this software:

  • Step 1 : Download and install Computer Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista - Microsoft Certified).
  • Step 2 : Click on “Begin Scan” to uncover Pc registry problems that may be causing Pc difficulties.
  • Step 3 : Click “Repair All” to fix all errors.


Experienced userswhether:
You can run this program with advanced settings. To do this, add the advanced option to the startup options.
This way you can modify even more system files such as TimeDate.cpl, Basebrd.dll, etc.

We Need Your Comments!

Much remains to be done to improve the theme installer. From now on, you should use the theme installer only to install themes, and not to apply / change themes. This will be added in the next beta version 0.8.



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