Home > FirstData Payment Gateway > We did the whole installation as mentioned but we're getting an error "Error: unable to use client certificate (no key found or wrong pass phrase?)" What could be causing this error?

We did the whole installation as mentioned but we're getting an error "Error: unable to use client certificate (no key found or wrong pass phrase?)" What could be causing this error?

There could be 3 reasons for this:

  1. FirstData cannot locate or read your PEM file. Please ensure that your PEM file is uploaded to app/code/local/Mage/Linkpoint/Model folder and it has the file permission 644.
  2. You are trying to use your LIVE PEM file in test mode (or vice versa). Live and Test PEM files are different.
  3. Your PEM file is corrupted. You will need to login into your FirstData account and download the file once again.