I've downloaded the installation program from the Adobe web site here:
Note the software and license keys are provided free, under the rationale of supporting existing customers now that the license server has been disabled.
Run the installer executable. When asked for the folder location to extract files, do not choose the default location (since you won't have permission to save files there). Instead you'll get an error like this.
A problem occurred while extracting some files. Check available space on your
computer and the write privileges on the destination folder.