Hi @tibbler
Please check MarkD-8131's reply is helpful to you first.
> Others are able to open these two particular drawings without issue
Could you please check the version number of their Visio?
Please go to File > Account > Product, check the Version number is the same as yours.
How do you open these drawings?
I suggest you open them from Viso app to have a check.
I also suggest you change the drawing location.
Then please go to FiIe -> Options -> Advanced -> Display -> Tick the box of "Disable hardware graphics acceleration" -> OK.
Any updates, you can post back.
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