How can I open a pdf?

I get this on every attempt
“General Error.
General input/output error.”
I was told I could edit pdfs with this, but I cannot seem to be able to open any, even small pdf files, in Draw or in Libre at all.
Using - Version: 7.0.3.1 (x64)
OS: Windows 10.0 Build 1904

Can you open anything with LibreOffice? It might be anti-ransomware blocking LO. Check your anti-virus settings for something like anti-ransomware and unblock or allow soffice.bin

Have a look at Defender Controlled Folder Access or Microsoft Knowledge Base if you don’t have third party anti-virus.

If you do have third party anti-virus then go into the anti-ransomware settings and unblock or allow soffice.bin . Cheers, Al