Ford Prefect Posted May 26, 2019 Share Posted May 26, 2019 After upgrading to Windows 10, running the CCleaner update installation didn't work for me. Running the file as administrator didn't work. Setting up a separate administrator account and running it from there didn't work either. Here's the message that I kept getting -- Clicking on "Retry" didn't work, and clicking on ignore gave a result that said the installation was successful, but failed to update from the old version. Here's what worked for me: 1) Open Windows Explorer (type "file explorer" in the search bar and click on the App at the top of the screen), 2) Navigate to C:\Program Files\CCleaner, and open the folder. In the right-hand pane, you should see something that looks like this -- 3) Right-click on a blank spot in this area, and from the drop-down menu, select "New > Folder." Name it "old files," if you like. 4) Move the existing files to the "old files" folder. In this way, you haven't permanently lost the current version. You can move the files back to where they were before, if need be. You have also retained the general path that Windows sees when it looks for those files. Now it should look like this -- 5) Close Windows Explorer. 6) Re-open Windows Explorer, navigate to "Downloads," find your newest installation file, right-click on it, and select "Run as Administrator." 7) ¡Viola! You now have the latest and greatest version! Link to comment Share on other sites More sharing options...
Moderators Nergal Posted May 27, 2019 Moderators Share Posted May 27, 2019 It's actually easier than that and can be found here ADVICE FOR USING CCleaner'S REGISTRY INTEGRITY SECTION DON'T JUST CLEAN EVERYTHING THAT'S CHECKED OFF. Do your Registry Cleaning in small bits (at the very least Check-mark by Check-mark) ALWAYS BACKUP THE ENTRY, YOU NEVER KNOW WHAT YOU'LL BREAK IF YOU DON'T. Support at https://support.ccleaner.com/s/?language=en_US Pro users file a PRIORITY SUPPORT via email support@ccleaner.com Link to comment Share on other sites More sharing options...
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