Adobe PDF permission denied
Permission Denied when opening PDFs is caused when the latest reader software is used to open a PDF document created with older versions of creator. You can resolve the problem by disabling enhanced security.
How to Fix:
- Click to ignore the error and then click Edit > Preferences.
- On the security tab there is a tick box “Enable Enhanced Security” – Untick this.
- Now click OK
You will now be able to open these documents.