Problem: You're encountering "Permission Denied" errors when logging into DOCLINE.

Cause: Mismatch between the email address DOCLINE expects and the one sent during authentication.
OR Mismatch between the authentication method DOCLINE was expecting. 

Solutions:

1. Check CAS Username/Authentication Method:
   • In the DOCLINE error message, locate the "Username" and/or "Authenticated by" displayed.
   • If it doesn't match the email you intended to use, you may have entangled accounts.
      
2. Disentangle Google Accounts:
   • Log out of all accounts (Google, Login.gov, or Research Organization) in the problematic browser.
   • Clear your browser cache and history.
   • Try logging in again with the desired DOCLINE email address or authentication method.
      
3. New Account (Last Resort):
   • If regaining control of your original account (Google, Login.gov, or Research Organization) is not possible, create a new corresponding account.
   • Request a new DOCLINE user account associated with this new email address.
   • Remember to completely log out of all other accounts before using the new one for DOCLINE.
      
4. Utilize Different Browsers:
   • Consider using dedicated browsers for different accounts. For example, Edge/IE for work and Firefox/Chrome for personal use.

Additional Tips:

• If the above solutions fail, try logging in with a different, unused browser for your authentication method.
• Ensure you're using the correct email address associated with your DOCLINE account.

Further Resources:

• Library Eligibility for DOCLINE: https://www.nlm.nih.gov/docline/doclineguidelines.html
• ILL Homepage (Alternative Interlibrary Loan Options): https://www.nlm.nih.gov/psd/cas/illhome.html

Important: NLM Support is always available if you encounter further issues.