May 7, 2018 · As per the screenshot , it seems the file you are trying to open is not a valid pdf file. (.pages in the end of the filename). Also, it seems you are not using Adobe application - …

May 7, 2017 · Hello - have scanned pdfs on pc and recently a number of them will not open. "Error [PDF Structure 40]:Invalid file format" appears and also - 9019436

Apr 13, 2016 · EEvery time I try to download a document to my account I keep getting the error message " invalid PDF format" .... Why...? And how do I correct - 8188652

Oct 26, 2022 · Hello all. This is probably a simple question for you guys, but I'm a total novice with Illustrator and especially at video formatting. This is for a live stream. I'm trying to simply add a …

Jul 16, 2018 · The following dialog pops up when I attempt to open it: "Adobe Acrobat reader could not open ' [filename].pdf' because it is either not a supported file type or because the file …

May 7, 2018 · As per the screenshot , it seems the file you are trying to open is not a valid pdf file. (.pages in the end of the filename). Also, it seems you are not using Adobe application - …

Feb 15, 2021 · It seems like with the new update to Adobe Reader we are having issues with "signatures" When we received a signed PDF, it shows: "Signed by Unknown" and then the …

Jul 11, 2014 · When I tried to open PDF file, it shows an error message which says: "format error: not a PDF or corrupted" I was surprised to see such error message and thought hope it was …

Nov 4, 2019 · I edited an svg file and closed and saved it. When I tried reopening, "This SVG is Invalid. Validate it before opening" displayed. How do I validate it?

Jan 19, 2010 · There should be a button that you can press to create your pdf file directly from Word or in Word you can Print to the Acrobat printer driver. Either method should work in …