CCleaner very slow (both loading and scanning)

I am in full agreement with Nergal

I have CCleaner v4.07.4369, and I am using a Windows 7 64-bit pc. I recently downloaded CC v4.07.4369 over the previous version of CC

That is NOT the correct terminology for the correct procedure, and it cannot happen that way.

You can download either the Portable ZIP or the Installer version of CC to a SEPARATE download folder, and then you are able to :-

Unzip the Portable version over the previous Portable version of CC; or

Install the Installer version over the previous version of CC.

If you really downloaded over the previous version of CC that would totally corrupt the old version,

and if you then unzipped/installed to the same place all settings would be trashed,

and starting the 32 bit version before handing over to the 64 bit version would be the least of your troubles,

and you really need to fully uninstall/remove the old and then download and start again properly.

I only use the portable version of CC,

and it is my experience that if I unzip both the 32 bit and 64 bit versions in the same folder,

then I can double click the 32 bit version and it immediately recognises that I have a 64 bit computer so it hands over immediately to the 64 bit version.

I have to rename CCleaner64.exe as CCleaner64.bin, or delete it, before I can use the 32 bit version to clean the 32 bit part of the system.

I do not think the Portable version is likely to have caused an error in the start-target.

If you used the Installer version then perhaps that has a bug and thought it was installing under a 32 bit system and so it fixed the start-target wrongly.

@Nergal

I checked, and the target already is (copy/pasted):

"C:\Program Files\CCleaner\CCleaner64.exe"

@Alan_B

Perhaps I used the wrong terminology. I downloaded the ccleaner .exe file from filehippo, double-clicked it and ran it. What I meant was that I didn't uninstall the old version of CC first, which I never have done. However, since this all started I have completely uninstalled and reinstalled CCleaner twice.

Have you tried saving the settings to INI file. This would remove all settings from the registry and save them to an INI file in the CCleaner folder, making the program portable.

Options > Advanced > Check box for "Save all settings to INI file".

If that doesn't help, try going back one version to 4.06.4324. You can install it over the top of the current version.

Last night I ran a scan before turning off my computer, and it ran quickly. Then this morning I tried to run a scan, and it was slow. It seems that 95% of the time it is slow, but every once in a while CCleaner will open and run smoothly.

@Jamin4u

Have you tried saving the settings to INI file.

Tried it, and it didn't work.

If that doesn't help, try going back one version to 4.06.4324

With the old version (4.06.4324), the first time I ran it it was slow to open, and the scan took one minute to clean 7MB. Second scan, it opened quickly and took just a few seconds to clean 2MB. This seems to hold with what I wrote above in this post--sometimes it will run quickly, but mostly it is slow.

Thanks again to everyone for trying to help me with this. I'm beginning to think I may just have to deal with a slow CCleaner.

You proved that it's not just the new version of CCleaner that's running slow for you.

Since you weren't having any problems until around the 29th of October, I'd look at any new programs or updates to existing programs. For example, Firefox 25.0 was just released on the 29th. If your running V25.0., CCleaner could be having a problem cleaning it.

You proved that it's not just the new version of CCleaner that's running slow for you.

Since you weren't having any problems until around the 29th of October, I'd look at any new programs or updates to existing programs. For example, Firefox 25.0 was just released on the 29th. If your running V25.0., CCleaner could be having a problem cleaning it.

I did update to FF 25.0, but i did this after after the problem started. The only other thing has been daily updates of my Kaspersky Internet Security. Perhaps its a problem with Kaspersky, or something went screwy with my computer in general. Other applications still seem to be running fine.

Perhaps its a problem with Kasersky, or something went screwy with my computer in general.

Antivirus is always a bottleneck of a PC causing a speed penalty, and real-time protection antivirus software will scan everything CCleaner does such as deleting files, etc. Could just be something that your antivirus doesn't like about CCleaner, and since you have to pay to use Kaspersky maybe hint at them if they have a forum to check into compatibility issues.

One thing I learned using Panda Cloud Antivirus was to run a daily Optimised Scan ("Quick Scan"), and then after doing that it wouldn't cause me a speed penalty when opening many programs.

Antivirus is always a bottleneck of a PC causing a speed penalty, and real-time protection antivirus software will scan everything CCleaner does such as deleting files, etc. Could just be something that your antivirus doesn't like about CCleaner, and since you have to pay to use Kaspersky maybe hint at them if they have a forum to check into compatibility issues.

One thing I learned using Panda Cloud Antivirus was to run a daily Optimised Scan ("Quick Scan"), and then after doing that it wouldn't cause me a speed penalty when opening many programs.

Thanks for the advice. I've noticed over the last couple of times that I've opened Kaspersky it is a little slow to navigate, so perhaps the problem lies there.

My CCleaner is slow as well. It's hanging when it's cleaning Microsoft Edge Session, Microsoft Edge Set Aside Tabs and Microsoft Edge Saved Cards. I've got the Pro version and it's fully updated (5.82.8950).

I have the same problem on my Desktop and on my Laptop.

7 hours ago, rannug said:
<div class="ipsQuote_contents ipsClearfix" data-gramm="false">
	<p>
		It's hanging when it's cleaning Microsoft Edge Session, Microsoft Edge Set Aside Tabs and Microsoft Edge Saved Cards.
	</p>
</div>

Hanging as in freezing? Or is it just hopelessly slow?

I know it's hopelessly slow which is why I've unchecked/unticked these under Microsoft Edge on my system months ago because it takes too long and I haven't had to put up with it once since disabling them:

* Download History


* Session


* Set Aside Tabs


* Save Form Information


* Saved Cards

1 hour ago, Andavari said:
<div class="ipsQuote_contents">
	<p>
		Hanging as in freezing? Or is it just hopelessly slow?
	</p>

	<p>
		I know it's hopelessly slow which is why I've unchecked/unticked these under Microsoft Edge on my system months ago because it takes too long and I haven't had to put up with it once since disabling them:


		* Download History


		* Session


		* Set Aside Tabs


		* Save Form Information


		* Saved Cards
	</p>
</div>

It's hopelessly slow.

Have you tried a restart? On all your pc' from time to time.

Since w8 and newer there is a kind of "softstart" enabled as default.

This can solve such a problem as by you. (Also by me from time to time)