diff --git a/Troubleshooting.md b/Troubleshooting.md
index 2f9ae1c..0b06424 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -1,10 +1,15 @@
 ### App repeatedly opens the Frontier authentication website
 The authentication didn't complete correctly for some reason. This can be caused by:
 - Using Internet Explorer. IE is [known](https://blogs.msdn.microsoft.com/ieinternals/2011/07/13/understanding-protocols/) to be broken. Please (temporarily) set your default browser to Edge, Chrome or Firefox and retry.
-- Incorrect protocol association in Firefox. Change Options → Applications → edmc to "Use EDMarketConnector.exe **(default)**".
+- Incorrect protocol association in Firefox. In Firefox change Options → Applications → edmc to "Use EDMarketConnector.exe **(default)**".
 - Entering credentials for a different Cmdr - see [Error: Wrong Cmdr](#error-wrong-cmdr).
 - Entering Steam credentials instead of Frontier credentials - see [Error: User not found](#error-user-not-found).
 
+If none of the above helps, visit the [Frontier authentication website](https://auth.frontierstore.net/), log in and deauthorize "Elite Dangerous Market Connector". Then restart the app.
+
+### Error: Invalid Credentials
+See [above](#app-repeatedly-opens-the-frontier-authentication-website).
+
 ### 500 internal server error
 Either: