566 will not run at all

[Sneed]

I've used this for years without issues. I replaced my main drive with an SSD and installed v566, which will not open or run at all. The little circle starts up then stops and absolutely nothing happens. The installation does show up in the Start menu but that is all that the installation accomplished. This system uses Win7Pro.

[nukecad]

Try using the 'Slim' installer from here (3rd down):
https://www.piriform.com/ccleaner/builds

Often that particular installer will work better with Windows 7.

[Sneed]

33 minutes ago, nukecad said:

Try using the 'Slim' installer from here (3rd down):
https://www.piriform.com/ccleaner/builds

Often that particular installer will work better with Windows 7.

Well I did that with the identical results. Will not open or run.

[nukecad]

OK, if neither installer is installing CCleaner then that sounds similar to the AV false positive issues from earlier this month; which AntiVirus/AntiMalware are you running?

PS. Did you also have v5.66 on the old drive?

[nukecad]

CCleaner version 5.67 has just been released.

It includes fixes for Win 7 so you may want to see if this new version will install/work for you.

https://www.ccleaner.com/news/release-announcements/2020/05/28/ccleaner-v5677763

[Sneed]

5.67 exhibits the same behavior, i.e. it won't run. I'm using Norton IS and I excluded CCleaner from it's monitoring but that made no difference. As to what was on the previous drive I'm unsure if 5.66 or a predecessor.

[nukecad]

Going back to your first post you say that CCleaner shows up in the Start menu - but nowhere else?
ie. Is there no desktop icon?

Let's check whether it is installing properly, or even installing at all, open File Explore and go to C:\Program Files\CCleaner.

Are there any files in there? (In particular CCleaner.exe and CCleaner64.exe).

If it's there then double click CCleaner.exe to see if it will run that way.

[Sneed]

It did install the icon on the desktop and all the files in C:\Program Files. Clicking on either the 64 or the 32 bit ccleaner.exe results in the failure I'm describing. My Win7 user account is set up to "Notify me only when programs try to make changes to my computer" and I'm accustomed to seeing a message asking me for permission when that occurs but I get nothing when trying to start CC. I'm wondering if the only setting that will allow it to run would be Never Notify and I can not allow that given the lack of support for W7.

[nukecad]

I'm at a bit of a loss then.

It appears that CCleaner is installing, but something is preventing it from running.
Usually when all the files are there but something is preventing the .exe from running at all then the suspicion is that the AV is blocking it.

I note that you have excluded CCleaner from Nortons monitoring, have you tried temporarily disabling Norton altogether?
https://support.norton.com/sp/en/us/home/current/solutions/v116457581

You could also try older CC versions to see if one of those will work for you, not ideal but when needs must.
You can find older versions on the right of this filehippo page:
https://filehippo.com/download_ccleaner/

Anyone else have any ideas what may be happening here?

I'll flag this thread up to the staff as well.

[Sneed]

I disabled auto-protect on Norton as the only way to do more would be to uninstall it. No change. I went to file-hippo and the only older versions available are the professional ones. I did try a trial version of 5.65 and it did open. So it seems the free version is somewhat crippled at this time and will exhibit what I've seen on some systems. Thanks for trying. I've been using this for many years and this is the first and probably last failure.

[nukecad]

Filehippo is showing both the free and the trial versions of 5.65 for me:

 

The Free and Pro versions are exactly the same programme.
It's simply that some features are disabled in the Free version, they are still there but just not accessible until/unless your register.

If 5.65 is working for you then I'd use that for now, don't worry if you have installed the trial version, the trial it will turn itself off after 14 days just leaving the free version.

[Sneed]

Try and download the free version of 5.65. Yes, it shows.

[nukecad]

You have given me another though.

Is it possible that CCleaner 5.66 and 5.67 were trying to run in compatibility mode for an earlier Windows version? (XP or Vista).

v5.64 was the last version to officially support XP/Vista, so a later version wouldn't run in such a compatibility mode. (5.65 shouldn't really run in XP/Vista compatibility mode either, but....)

To check for that:
In File Explorer right click on CCleaner.exe and select Properties.
Select the Compatibility tab and check that 'Run in compatibility mode for:' is unticked.
(You could also do the same for CCleaner64.exe but they should both be the same.).

[Dave CCleaner]

28 minutes ago, nukecad said:

Filehippo is showing both the free and the trial versions of 5.65 for me:
 

Note that FileHippo seems to have gone rogue recently and points the "free download" button to a cart to buy the paid version when trying to download old versions.  If this happens to you then go with the trial instead - it's 14 days of the Professional version (if you have not already taken a trial recently) which then reverts to free if you don't buy.  No credit card required for the trial. No we'd don't do any of that card-on-file surprise billing if you forget to cancel your trial (that kind of nonsense just ends up costing us a fortune on refunds).

That said, we do have millions of users successfully cleaning with Windows 7 and CCleaner 5.66.  Looking at the problems people have had over the past couple of months, the most likely causes of problems are either outdated AV, setting a firewall to block CCleaner or, as @nukecad pointed out, running in XP or Vista compatibility mode - which I would encourage you to check.

[hazelnut]

 

@Sneed

Does CCleaner run in Windows safe mode ?

Do you use 0patch?

[Sneed]

I downloaded the full version and that runs. As I understand it it will convert to the free version after two weeks.