Can't use Adobe reader which is installed
A few days ago I suddenly became unable to view pdfs.
I can view them if I set the default app to microsoft edge, but this does not allow me to create pds from illustrator.
I have uninstalled and reinstalled adobe reader DC twice and set it to default app adn I keep getting error messages when trying to create new pdf out of illustrator and when trying to view old pdfs already saved in my files. It will not open pdfs received by email
When I try to lauch reader from the start menu I get this:

Can anyone tell me what on earth is going on please? I can't do my work and I get paid near minimum wage by the hour!!!
Thank you
