Opening 11.1.2 Dashboard displays error for charts

[MichaelB]

The error says "we can't retrieve data from the data set All (query)." The visualizations that I have that are straight aggregated numbers work fine, but the charts don't display. In edit mode, I can get them to show and update, but just not when opening from the main menu link.

Initially I thought it was because in our test environment we have a connection to Test and Prod data, and I thought it was getting hung and trying to render before the connection was chosen, however I imported it into Prod where there is only one connection to Prod data, and it did the same thing.

Any ideas how to resolve this? This is my first foray into working with dashboarding since Cognos spruced it up. Maybe it's a known issue that I couldn't find? TIA for any help!

[MichaelB]

Looks like the IIS change fixed it for me.

https://www.ibm.com/support/pages/we-cant-retrieve-data-data-set