Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Cannot Uninstall UxTheme Core Beta under Windows 8 after upgrade

03 Aug 2013   #1

Windows 8 Pro x64
Cannot Uninstall UxTheme Core Beta under Windows 8 after upgrade

I upgraded in-place from Windows 7 Professional SP1 x64 to Windows 8 Pro x64. I do not have Windows 8.1.

I forgot about UxTheme Core until post-upgrade, then figured I might as well uninstall it since it was designed for an OS I was no longer running.

However, I am not permitted to uninstall because "Your theme subsystem (e.g. uxtheme.dll, themeui.dll) has been tampered with. UxStyle requires these files be restored before you can continue."

Well yeah, these are Windows 8 files which have not been touched--but they're not Windows 7's, so the uninstaller refuses to move forward.

I have tried installing the Windows 8 compatible beta on top of this one but that also fails based on a "previous version" being installed already.

Is there some way to forcibly remove the old Windows 7 UxTheme?

My System SpecsSystem Spec
03 Aug 2013   #2

Microsoft Community Contributor Award Recipient

Win 7 Pro x64 / Win 10 Pro

Welcome to the Seven Forums

Do Option 2 of this tutorial SFC /SCANNOW Command - System File Checker it will not harm any data or programs you have installed it will try to find and repair any corrupt system files that you have. You may need to do this up to 3 times with a reboot after each scan.

Then try to uninstall it.

If that does not work:
Click on the Start Button type in Services In the search box and then click on Services
Cannot Uninstall UxTheme Core Beta under Windows 8 after upgrade-1.png

Scroll down until you see Unsigned themes select it in click on the Stop text and let it stop then go to C:\Windows and delete UnsignedThemesSvc.exe
Cannot Uninstall UxTheme Core Beta under Windows 8 after upgrade-4.pngCannot Uninstall UxTheme Core Beta under Windows 8 after upgrade-stop.png


My System SpecsSystem Spec

 Cannot Uninstall UxTheme Core Beta under Windows 8 after upgrade

Thread Tools

Similar help and support threads
Thread Forum
UxStyle Core Beta, Unsigned Theme cannot start in Windows 7 64bit 7600
Hi, I'm very frustrated now because it's been 3 days now that I can't get even 1 single Glass theme to work. The taskbar and Start menu is like a Windows95 mode and before I post a thread here I already read some threads with problems the same as my issue but it doesn't works for me. I'm using...
Themes and Styles
Upgrade from dual core to quad core
First, some keywords to help searchers: QX9650, quad core, task manager, cpu-z, cpu-id, shows showing only 2 two cores. I recently upgraded an Intel E8500 to a QX9650 and had the problem of Windows 7 only showing 2 of the 4 cores. It took a few frustrating hours to find the solution, but I...
Hardware & Devices
Windows 7 SP1 beta uninstall Help
Hiya All, Sorry not been around for a while. Gents when I try to uninstall Win 7 SP1 Beta, I'm getting no joy from Programs and Features (Uninstall options N/A). When I try using the command Prompt and type in wusa.exe /uninstall /kb:976932 I keep getting this box. All help would be grat...
Windows Updates & Activation
cant uninstall Windows Live Wave 4 Beta
well i made the grave mistake of installing this without a backup. now it thinks its still installed, but there is no windows live folders on my computer and my registry from what i can tell has no mention of them. now i jsut have to figure out how to get the OS to think that there is no windows...

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 12:04.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App