diff --git a/Troubleshooting.md b/Troubleshooting.md
index 1767f19..2dd1cc0 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -173,7 +173,9 @@ The authentication didn't complete correctly for some reason. This can be caused
 - 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.
 - The Frontier authentication website is confused - see [Error: An error occured](#error-an-error-occured).
 - 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).
+- Entering Steam credentials instead of Frontier credentials.  If you want 
+  to use Steam authentication then select that button on the Frontier 
+  Authentication web page this application opens - see [Error: User not found](#error-user-not-found).
 
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@@ -224,8 +226,6 @@ Either:
 ## Error: User not found
 Your Steam account may not be linked to your Frontier account (you can check whether you have any external accounts linked on the [Frontier store](https://www.frontierstore.net/frontier_partnerkeys/)).
 
-Please enter your Frontier credentials into the authentication website, not your Steam credentials.
-
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 <a name='error-missing-credentials'></a>
@@ -554,21 +554,21 @@ Alternate URL: "[The latest supported Visual C++ downloads](https://support.micr
 
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 ## I run two instances of E:D simultaneously, but I can't run two instances of EDMC
-**NB: This documentation appears to be in error.  The second instance
-via `runas` will detect the already running EDMarketConnector.exe in the
-'default' user (that you're logged in as) and thus not run.  We'll
-investigate changing the check to take different users into account.**
+This application supports this scenario if you run the second instance of ED 
+in a *different* user account - e.g. using `runas` on Windows. Run the second 
+instance of this application in the same user account as the second 
+instance of ED:
 
-In the meantime you could investigate [Running from Source](https://github.com/EDCD/EDMarketConnector/wiki/Running-from-source)
-for additional copies, as that will not perform the EDMarketConnector.exe
-process check.
+`runas /user:<USER> "\"c:\Program Files (x86)\EDMarketConnector\EDMarketConnector.exe\" --force-localserver-for-auth"`
 
-    EDMC supports this scenario if you run the second instance of E:D in a 
-    *different* user account - e.g. using `runas` on Windows. Run the second 
-    instance of EDMC in the same user account as the second instance of E:D.
+(Obviously adjust the path if you have the application installed elsewhere.)
 
-    EDMC doesn't support running two instances of E:D in the *same* user 
-    account. EDMC will only respond to the instance of E:D that you ran last.
+The `--force-localserver-for-auth` flag is necessary to ensure the callback
+from Frontier Authentication reaches the correct instance of this application.
+
+This application doesn't support running two instances of ED in the *same* 
+user account. The application will only respond to the instance of ED that 
+you ran last, because its Journal file will then be the most recent.
 
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