> For the complete documentation index, see [llms.txt](https://help.simnetonline.com/blog/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.simnetonline.com/blog/2018-posts/resolved-issue-loading-simbook-lesson-content.md).

# RESOLVED – Issue loading SIMbook & Lesson Content.

An unexpected issue occurred with the content origin that supplies SIMbook and Lesson content. This issue occurred from 7:50 AM – 9:10AM Central, Wednesday, September 5th. Students may have received a blue screen or a 404 not found message.

We appreciate your patience and apologize for the inconvenience. Should you or your students experience any other issues, please contact our Customer Experience Group toll-free at 800-331-5094 (US Only).

Sincerely,\
SIMnet Product Team