pdf download, firefox ok, chrome error can't save(110)(

suddenly after saving pdf's from same site for 5yrs+,using chrome to invoke acrobat and then attempting to save pdf using save as, 

started getting error:

the document could not be saved. there was problem reading this document(110)

if try to ms print to pdf, instead of save as, that also returns an error, ms bs error msg 'there was a problem'

note if I change chrome to open pdf in browser, then trying to download it just hangs.

the file opens in firefox and then it can be successfully downloaded

therefore I'm not sure if its a chome problem, or a chrome-acrobat compatability problem, since the file itself appears to be a valid

acrobat file.

it seems somehow chrome changes the content downloaded from the site in such a way to make it an error for acrobat?

this suddenly started happening 6/1/22 after 5 years,  like something changed either in chrome or acrobat.