The release date was delayed by seven months from that originally announced after it failed an assessment by the Government Digital Service.[3] When released there were 33 ‘known issues".[4] The system went live on Monday 15 Jun 2015, but on 17 June it was shut down and GPs across England resorted to fax machines in order to refer patients.[5] After launch, the system experienced numerous outages in its first weeks.[6][7] In July 2015 users were advised to switch to Google Chrome in order to reduce the four-minute loading time to 50 seconds.