# Server Upgrade, Remote Desktop Connection Fix

The document is intended to be followed only by FVC staff/vendors who have already completed the Server Upgrade instructions, linked [here](https://bookstack.reinmuthconsulting.com/books/microsoft-remote-desktop-old-server-to-new-server/page/server-upgrade).

Continue with this process only if you have connection issues. Examples are hanging at `Initiating Connection` or receiving the `Unable to connect` message.

If you are remote/offsite, your VPN *must* be connected for anything to work.  At this time a general rule is that if you can't connect to the old server, you will not be able to connect to the new server.

This guide will feel a bit technical.  Do not hesitate to ask for help.

  - Open the Terminal application, in /Applications/Utilities/.  It's fine to use Spotlight to open Terminal.
<p> 
  
  - Copy and paste the following line:
```
echo "10.22.62.8    fvcvm4.ad.foleyvisioncenter.com" | sudo tee -a /etc/hosts
```
<br>

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If you receive `zsh: permission denied: /etc/hosts` then proceed with this section, otherwise skip to just below the next horizontal divider line.
  
  - Head up to the Apple menu -> `System Preferences` -> `View` menu -> `Security & Privacy` -> click the padlock in the lower left hand corner of the window.  
  - Enter your macOS user/pass.  If you cannot unlock this pane, stop here and contact Brandon or Mark.
  - Switch to the `Full Disk Access` from the list on the left.  Click `+` on the right hand side, navigate to /Applications/Utilities and select Terminal -> click `Open`.
  - If prompted, go ahead and select `Quit Now`, then relaunch Terminal.
  - Retry the full copy and paste from above that starts with "sudo echo..."

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<p> 
  
  - Microsoft Remote Desktop should already be open.
<p> 
  
  - Try to open the new server connection.
<p>

  - If you are still running into error messages, return to the main Server Upgrade instructions linked at the top of this page and look at the other troubleshooting options.