I recently migrated my moodle site to new server. Migration is successful but all the pdf files previously uploaded are not opening. an error message "File does not begin with '%Pdf-'" appears when i click on icon. I have uploaded them through drag and drop upload. I am using moodle 2.2.6
Plz. help me to sort out this issue....
Its possible your browser cached old data from the previous server so that when you go to the pdf it cant read it. Try clearing your browser cache. if that dos not fix it, try downloading the pdf from your server and see if it loads on your computer locally.
Many times when you are transferring files from one server to another , the file format can become corrupted. If the file does not open on your local computer, migrate the pdf files again to make sure you have a good copy of them.