Thanks Hazelnut,
I may need to update Adobe software as it seems to be in the background at the moment.
The phrase 'always use this' does not come up when I right click.
Thanks for now.
I have uninstalled CCleaner.
I can no longer open any pdf files as they have migrated to CCleaner brwoser somehow.
I no longer wish to use CCleaner but I do need to read pdf files.
Please advise,
Thanks Tim