I've used the same Normal.dot to edit the same document for ten years or so.
At some point, the Normal.dot stopped loading when the document was opened. I suspect there was a security update that disabled that for some or all templates on the grounds the file might contain a rogue and dangerous macro.
So, now I open my document and reflexively type alt-TIG space return. (Tools->Templates and Add-Ins-->Global templates and add-ins (which causes Normal.dot to have a dotted border indicating selection; space chackmarks it; return OK's the change.) The template appears to load fine, adding a few macros (zoom in/out) and a custom toolbar.
This has worked fine for several years*** but is annoying. Is there any idea why this doesn't auto-load any more, and how to get it to do so again?
*** but it actually stopped recently reading in Normal style, which I address in a separate topic for discussion