How do I open a file if I get an “Access is denied” error?
If you get a message denying access when you try to open a file, here are some options you can try:
Check the permissions of the file or of the folder the file is saved in:
To open a file, you need to have read permission. For more information on permissions, see What are permissions?
Check to see if the file is encrypted:
If the Encrypt contents to secure data check box is selected, you need the certificate that was used to encrypt the file to open it. You should get the certificate from the person who created the file. Visit Microsoft's support site for more information on private keys here