V7 of CCleaner doesn't clean Opera cookies completely

CCleaner for Windows CCleaner Windows Bug Reporting
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Version 7 of CCleaner for Windows (I currently have v 7.3.1120.0) STILL doesn’t clean Opera cookies completely (currently v125.0.5729.49). After running Custom Clean the report says that a number of Opera cookies—perhaps hundreds—have been cleaned but when I look at cookies in Opera itself there are still hundreds remaining including for sites I have only visited recently. Only a few of the remaining cookies relate to sites on my “cookies to keep” list.

I raised this issue soon after v7 was released. When will it be addressed?

(The same thing happened late in the life of version 6—there was a period extending over a number of updates when CCleaner failed to clean Opera cookies. It took a long time—too long—to get it fixed.)

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Hi @warwick.t,
When I perform a default clean on Opera the cookies look to be fully cleaned.
Please can you let me know the location of the files you are seeing that are not being cleaned so I can investigate this further.
I was using Opera v126.0.5750.43

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Thanks for getting back Laurence.

I’ve done a bit of playing around and it is not straightforward!

ChatGPT tells me Opera cookies should be in a database as follows:

C:\Users\\AppData\Roaming\Opera Software\Opera Stable\Network\Cookies

A search (using Everything) on my computer for “cookies” yields the following in Opera-related folders:

image

The relevant files are the two January 2026 ones. It looks like Opera currently stores cookies in:

C:\Users\\AppData\Roaming\Opera Software\Opera Stable\Default\Network\Cookies

I have about 380 cookies under “Seel all site data and permissions” on the following page chrome://settings/cookies.

I ran a CCleaner Health Check and it indicated that 157 items/9.7MB of Opera cookies would be cleaned. After running that scan it says that 153 items/9.1MB were cleaned but the cookie count in Opera is unchanged at about 380 and I still have the 1,344kB Cookies file.

image

It is not clear where the 9.1MB of cleaned cookies were located. If I then rename what appears to be the current cookies file i.e. the 1,344kB Cookies file, to Cookiesold, and go in to Opera again, all the 380 odd cookies still appear to be there. This suggests there is a backup copy somewhere or “Cookies” isn’t the relevant file. (Note that Synchronisation is “OFF” in my profile.)

If I then delete all cookie data from within Opera (the “Delete all data” button), it deletes most but not all cookies leaving about 35, and the file list looks like this i.e. the Cookies file is much smaller:

image

If I then delete the “Cookies” file and rename “Cookiesold” to “Cookies” my original cookies list is not restored—there are still only about 35. It seems that there is an interaction between “Cookies-journal” and “Cookies”. When I ask ChatGPT, it confirms that there is a relationship although the detail is a bit beyond me.

I guess my simple point is that the late/final updates of version 6 cleaned my Opera cookies as expected whereas version 7 doesn’t.

Regards

Warwick