Knowledge Base

28 February 2017: AWS Outage and how it affected Covidence

Earlier today (28 February 2017), Covidence experienced an unexpected disruption to normal functionality. A widespread internet infrastructure outage has affected thousands of websites across the Internet, including Covidence. Functionality has already returned to normal and we are monitoring the situation closely for further developments. If you’d like more detail, please read on.

The current indication is that the issues described below began as early as 17:44 UTC and may have lasted as late as 21:49 UTC.

The functionality believed to have been temporarily interrupted includes:

  • Importing citations
  • Exporting review data (references, extraction data, RevMan)
  • PDF uploading (individual and bulk)
  • Viewing, downloading, or annotating previously uploaded PDFs
  • Downloading existing export files

The interruption predominantly appeared as unexpected error messages or blank pages.

All functionality has been confirmed to be back online and fully functional. At this time, we do not expect any data or work to have been lost or corrupted, despite the interruption to users’ time and work.


We fully acknowledge how frustrating this interruption was for users trying to complete their important work. If you have any questions, concerns, or feedback, please do not hesitate to get in contact at support@covidence.org ottweeaus(@Covidence).