Excel crashes on untrusted documents

Question

After more than a month of frustration, I think I'm pretty dead sure that with Excel Tabs enabled, opening any untrusted document (those that will show an "Enable content" button on top) will cause Excel to crash.

Moving those files to trusted locations will allow me to open them, but unfortunately Excel won't allow me to add a trusted location on my network or add any trusted documents, so that means I cannot directly open network files unless I disable the Tabs first. My current workaround is using the Excel Viewer to open network documents, but doing that often causes some conflicts with Excel itself, and I cannot update them.

I run Excel 2016 on Windows 10 1703 Pro, both 64-bit. There's nothing I can do now except to wait for your next release, which will hopefully address this issue.

Or, perhaps you could help me find a workaround? Like forcing my Excel to allow trusted locations on the network or something I cannot think of?

Thanks.