I’ll bump this to make sure that the staff notice it.
Edit - The staff agree that it should not be offering that upgrade from Win10 to Win11 and are looking at why it is doing that, and at blocking it asap.
The Software Updater has been offering Windows Updates for a while now - but many of us think that it shouldn’t be doing that, and certainly not a major Windows version update.
You should always check what CCleaner is offering to update and reject any that you don’t want.
PS. Health Check does not offer the Windows updates, only the stand alone Software Updater will offer them.