I was able to open pfd files before my computer was shut down by a power outage, once power was returned I am unable to open pdf files

I receive email thru chrome. I believe it is http & it does go to a new tab, then i get the message that says "failed to load pdf". Ok, it was suggested that I right click on the blue highlighted link and click save link as..when I do that it downloads and shows in the bottom left of the screen and I can open it. I do not understand why I can not open the link directly from the email.