There was an error opening this document. This file is already open or in use by another application
The adobe reader shows me this error: "There was an error opening this document. This file is already open or in use by another application" when we are opening a pdf generated by another application. We checked that the pdf file was not read-only and no other software was using this pdf. It was strange because some PCs could open the file and some other couldn't, and after some period of time the file could be opened again. This happened usually on those files with more than 20 pages. We have searched on the Adobe website and without any solution can solving this issue. Only suggestion is using other viewer but it is not the user like to have.
