PDFs used to open fine on my computer, but since yesterday double-clicking them does nothing. I restarted already and still can’t get a 12-page invoice to open - any idea why?
That’s annoying, especially for something as ordinary as an invoice. I’d first right-click the PDF, choose “Open with”, and pick your usual PDF reader, as Windows can lose the file association after an update. If that fails, try opening the reader itself and use File > Open; on my old laptop, repairing or reinstalling the reader has fixed this before.
Had the same thing last month with some signed forms from the field. Double-click stopped working until I right-clicked a PDF, chose Open with, picked my PDF reader, and set it as the default. That got them opening again on my computer. If yours still fail I would try launching the reader first and opening the invoice from there.
That exact thing happened to me after a Windows update, it quietly reset which program opens PDFs. Right-click the invoice, choose Open with, pick your usual reader and tick the box that always uses it. If that still does nothing, open the reader first and use File then Open to go find the file.
That usually means your computer forgot which programme to use for PDFs. Try right-clicking the invoice, select ‘Open with’, and pick a web browser like Chrome or Edge. If you need to sign or add notes to that invoice later, I just drag my files straight into PDFcap. Did opening it in your browser do the trick?