![]() When printing was successfully started, it was forever slow. This was mainly experienced on PDFs that were older - had been generated on 32-bit Windows based PDF creators. Both Acrobat Reader and Nitro PDF Reader would experience extensive delays and sometimes crashes while I was accessing and changing the printer attributes. The first was printing from a 32-bit PDF viewer to a REAL printer. I have experienced two main problems using 32-bit PDF software on 64-bit. Using 32-bit PDF Viewers to Print To Real Printers Due to this, many producers of PDF viewers just keep their software 32-bit and make it work smoothly on 64-bit. Since PDF viewers display PDFs within the browser, they must at least support 32-bit processes. If it wasn't, any programmatic content on the web that relys on 32-bit plugins and activex controls would stop working for you and that would be a very bad thing. First, the default browser on 64-bit Windows is the 32-bit version of Internet Explorer. PDFs are challenging for a combination of reasons. It does mean, however, that finding software that is TRUE 64-bit takes a little more detective work. This saves software vendors a lot of hassle and money and is a totally rational approach to managing their codebase. Many are 32-bit EXEs designed, tested and debugged on 64-bit. If you support 64-bit Windows you are already well aware that the 64-bit "edition" of any given software application may not have 64-bit EXEs in it. 64-bit "Editions" of Software Applications One area that has not is viewing and creating PDFs. I recently moved to a 64-bit machine for my daily production workhorse. Also have a few observations about the HP Unversal driver and splwow64.exe. Here's how I solved my challenges with free alternatives. PDF printers and some viewers seem to have quite a few challenges with this approach. When a 32-bit program need to print, it uses a special program called splwow64.exe (print thunking layer) to talk to 64-bit printer drivers. ![]()
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