In windows 10, when I run CCleaner, the Encryption password and password for the Nextcloud server I use for sync are deleted. Nothing else is deleted and everything works once the passwords are re-entered.
Where are these passwords stored and does anyone know if there is a particular setting in CCleaner that can be turned off to avoid this?
On Windows the passwords are saved to the keychain. I have no idea about CCleaner but maybe you can exclude the whole keychain, because its content is probably not more than a few KB.