Hello!

I think based on the error text that comes out, the issue is not with Excel, but with the administrator disallowing the opening of hyperlinks from a document or a file. There are ways to work around this:
1) You can right click on the cell edit hyperlink, and just copy-paste it on your default browser.

2) You can just use the said excel file on another computer. It should already work to access it that way.

Personally, no 1 is more convenient than no 2.

For more tips on excel and financial models, you can check this out. Hope this helps!