Can you please provide a screenshot of the error message you are getting so that I can get a better idea of what’s going on there?

Also, in situations such as this, it’s best if you take WSE RemoteApp completely out of the picture when making a remote connection to the server (via its Remote Desktop Gateway). That way you can easily tell if the problem you are having is directly related to WSE RemoteApp, or if it is simply a problem with the standard/default configuration of your Essentials server.

You can do that by attempting to connect to the server Dashboard from the Essentials server’s built-in Remote Web Access (RWA) website. Since WSE RemoteApp uses the exact same underlying functionality of the Essentials server in order to make its connections, this means that if you’re not able to successfully connect to the server Dashboard from your Essentials server’s built-in RWA website, then the issue is with your Essentials server’s Anywhere Access/Remote Web Access configuration (etc.), and not with WSE RemoteApp.

To connect to the server Dashboard from your server RWA website:

1. Open the server Dashboard and go to the “USERS” page.

2. Double-click on one of your standard users in order to view the user’s properties.

3. In the user properties window that appears, click on the “Anywhere Access” tab, and make sure that the “Allow Remote Web Access and access to web services applications” AND “Server Dashboard (administrator required)” check boxes are checked, and then click on the “OK” button in order to save your changes.

4. Go to your server’s RWA website (e.g. https://YourDomainPrefix.remotewebaccess.com/remote or https://YourDomainPrefix.YourCustomDomain.com/remote) and sign in as the same user from steps 2 & 3 above.

5. Once the user is signed in, click on the tile with the name of your server that’s located within the “Devices” widget.

6. When prompted, open the [servername].rdp file, and then attempt to remotely connect to the Essentials server’s Dashboard by signing in using your admin credentials (and NOT the standard user’s credentials!).

Are you able to successfully remote connect to your Essentials server’s Dashboard this way?

If not, then that’s your problem… i.e. You won’t be able to remotely connect to WSE RemoteApp until you can first successfully remote connect to the server Dashboard from your server’s RWA website since they use the exact same underlying functionality. You’ll need to figure out what is causing the problem, and your best bet there is to run the Anywhere Access setup wizard again (i.e. from within the server Dashboard, click on the “Settings” link that’s located in the upper right-hand corner, click on the “Anywhere Access” tab/link, and then click on the “Repair” button. Note that you might also need to click on the “Set up…” button in the Domain name section and set up your domain name again).

For additional help please see:

Successful Connections Require Secure Remote Web Access Setup!

Manage Remote Web Access in Windows Server Essentials