Setting Up Let’s Encrypt on IIS for Umbraco: Fixing the .well-known Issue

A few days ago, I’ve setup Let’s Encrypt on my humble IIS -thanx to Rick Strahl’s blog post. After that, I was looking forward to test it on one of my Umbraco sites.

But this excitement didn’t last long as I got some errors including something like Let’s encrypt can’t access folder.

After a little digging, I’ve found out that Let’s Encrypt uses .well-known folder to verify site and issue SSL.

The fix was simple, just add .well-known folder to your Umbraco reserved paths

<add key=”umbracoReservedPaths” value=”~/umbraco,~/install/,~/.well-known/” />