SOLUTION? “Class not registered” when trying to open Chrome in Windows 8.1/10

Recently I have been seeing an increased incidence of this particular issue on newer Windows 8/8.1/10 machines.  It occurs when the user attempts to launch Chrome via any shortcut on the Desktop, taskbar, or elsewhere, or when opening any file or protocol (URL, etc.) associated with Chrome.  The only permanent “solution” is to create a direct shortcut to the Chrome.exe executable in the %PROGRAMFILES(x86)%\Google\Chrome\Application directory and then launch it from there.  However, this doesn’t fix the problems with trying to open .HTML files and URL links from other applications, which still trigger the error.

Lots of suggestions abound across the internet regarding ways to temporarily correct this problem.  Most of them center on the deletion of the Chrome Classes registry keys affiliated with the file/protocol associations, but these are only temporary; the problem resurfaces each and every time Chrome updates itself, which happens a lot.

Instead, there seems to be a much easier solution.  Bear in mind that I have only thus far tried this on one machine, but it worked immediately, and it jives with other research I’ve done on related subjects.  Please let me know in the comments if this solution also works for you.

The fix?

  1. Uninstall Java (all versions).
  2. Uninstall Chrome.
  3. Reboot.
  4. Reinstall Chrome.

This corrected the problem completely on my user’s machine.  It may or may not work for you; if it doesn’t, try one of these other solutions:

  1. Open regedit.
  2. Delete (if present) the following registry keys:
    1. HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{5C65F4B0-3651-4514-B207-D10CB699B14B}
    2. HKLM\Software\Classes\Chrome
    3. HKLM\Software\Classes\ChromeHTML\open\command\DelegateExecute
  3. Reboot.


  1. Open Default Programs and set a different browser temporarily to default (for example, IE).
  2. Open Chrome and choose to set it as default when automatically prompted.

Hopefully this helps someone else struggling with this problem.

Solution: Google Chrome error: “An error has occurred – Download was not a CRX”

I’ve seen this problem increasingly often with the latest version (24) of Google Chrome.  It happens when trying to install an extension from the Chrome Web Store — and nothing seems to correct it.

An error has occurred
Download was not a CRX

So, what’s the solution?  Visit the Chrome Web Store from within Incognito Mode, then install the extension from there.  Problem solved!  (Or, at least sidestepped anyway.)

Solution: Remove Google Chrome search hijacker

Today I encountered an irritating Google Chrome search hijack which wasn’t removable via the usual methods.  Attempting to remove the rogue search engine via the Chrome options menu simply produced a yellow bar at the top of the screen which read:

Some options are managed by your administrator.

Even completely uninstalling Chrome and removing the existing User Data folder under Chrome’s AppData directory didn’t fix the problem.

Shortly thereafter, however, I discovered another location where Chrome settings can be preset/mandated: the registry.  Specifically, two locations:




The specific keys which needed deletion in this case were:

  • DefaultSearchProviderName
  • DefaultSearchProviderSearchURL
  • HomepageLocation
  • HomepageIsNewTabPage

I had to remove them from both registry areas.  But after this, the problem was gone.

If this post has helped you, please take a moment to leave a comment!

Disable Google Chrome’s built-in Print Preview

Google Chrome Logo

Got Google Chrome but hate the new Print Preview design? Turn it off!

1) Open Google Chrome, type chrome:flags in the address bar, and press ENTER.
2) Find Print Preview and Disable it.

You need to have the latest version of Chrome (14) for this to be possible.

If you’re also having trouble with the built-in lightweight PDF reader, you can disable that just as easily and likewise enable your favorite replacement plugin (in my case, as much as I hate to say so, I stick with Adobe for all my clients, as it’s just more compatible than any other current solution).

1) Open Google Chrome, type chrome:plugins in the address bar, and press ENTER.
2) Find Chrome PDF Viewer and Disable it.
3) Find your favorite PDF plugin (it should be disabled by default) and Enable it.

Hope this helps!  Chrome is an excellent browser, even as its market share continues to rise (and, inversely, as its level of security drops).  It’s worth making the effort to make it work for you, as it will keep you safer.