I spent 6 hours on a whole house full of windows like this. I’m so grateful that they are paying me monthly for quarterly maintenance to keep this from happening again.
I didn’t show it in video but I basically soak the glass and frames down with water from a handheld pressure sprayer. Use a cheap microfiber towel to break the oxidation loose and get it to mix with the water before spraying everything down again to rinse it off. Then when I come back with the mop and squeegee my tools don’t get ruined on every window.