diff --git a/Troubleshooting.md b/Troubleshooting.md
index 5826a7d..b5544ff 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -28,6 +28,14 @@ Please enter your Frontier credentials into the authentication website, not your
 This can be caused by the application not yet knowing your Commander
 name.  Ensure the [Journal files location is set correctly](Troubleshooting#doesnt-auto-update-andor-persistently-gives-server-is-lagging-error).
 
+## unable to get endpoint /profile (or /market, or /shipyard)
+This refers to an attempt to retrieve data from the Frontier CAPI
+service that didn't receive a response within the timeout (currently
+10 seconds).
+
+Unless this **always** happens for you (in which case you might
+need to adjust some firewall settings) it's likely a problem at
+Frontier's end.
 
 ---
 # Third Party Site Plugins (EDSM, EDDB, Inara)