Failed to open attachment

[CarsonG]

I am unable to open attachments in ArcPro for feature classes that have attachments or for hosted feature layers that have attachments.

I can open the map in AGOL or the hosted feature layer in AGOL and see the attachments. No issue opening the same attachments on a different computer.

[RhettZufelt]

Any chance you are clicking on either a feature with more than one attachement, OR, close enough that you are clicking more than one feature with attachments?

Pro 2.9.4 and later have a bug with HFLs where you are not able to do the above.  It will only allow you to click on a single feature with a single attachment, or it throws error.

If you select the feature(s), are you able to see/access the attachments in the attributes pane?

R_