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firefox for windows failed to save to pdf if temp directory is moved from default

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Since ver 55 up to ver 66 of Firefox for Windows, if the Windows default temp directory is changed from %USERPROFILE%\AppData\Local\Temp to a different location then any webpage sent to Microsoft print to PDF printer will fail to save the file. It only works if temp dir is at default location. Please take a look, thank you all.

Since ver 55 up to ver 66 of Firefox for Windows, if the Windows default temp directory is changed from %USERPROFILE%\AppData\Local\Temp to a different location then any webpage sent to Microsoft print to PDF printer will fail to save the file. It only works if temp dir is at default location. Please take a look, thank you all.

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Did you look at browser setting as well? And where are you getting the pdf from?

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Thanks for replying. I think all my settings are correct. And I'm not talking about downloading pdf files but saving webpages as pdf files through Microsoft Print to PDF printer driver.

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So does it fail to save to that location? If it does that would mean the permission isn't set right in the O/S to write to it.

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It fails to save to any location. I am pretty sure it's a Firefox bug, because I always have to switch to Chrome or Internet Explorer every time I have a need to save a webpage to pdf file. You can try it yourself and see if you're using Windows. Go to Control Panel > System >Advanced System Settings > Environment Variables... and change the Temp and Tmp values to other locations than defaults.

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Do other browsers save the file to the temp location when you print to a PDF file?

To what directory is Firefox saving the file or does it simply use the temp folder and/or the PDF printer driver can't find the file?

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When saving to pdf file under Chrome or IE, a temp file is created in the temp dir then it is moved to the user specified dir. I'm not sure how Firefox does it, all I get is a print error shown in the picture. Maybe it couldn't find the temp dir since it was changed from Windows default.