If it is good to go, you should see a green rectangle with the message 'Ready to connect (secure connection)' near the bottom of the program window. If you don't see it, either is your Mac has no Internet connection or the program can't connect to the Server. The ID and Password are generated by the TeamViewer program once it is connected to the Internet and the Server. Now, you can see the TeamViewer QuickSupport program is up with the 9-digit 'Your ID' and 4-digit 'Password'. Depending on your Mac Security setting, you may be prompted about the application is downloaded from the Internet. Double-click the icon in the middle to start the TeamViewer QuickSupport program. Double-click the TeamViewerQS.dmg file to open it. Then, the file will show up at either top or bottom depending on using ascending or descending order. We suggest you sort the folder by Date Modified. And you should be able to find the downloaded file there. Once finished downloading the file, open the Downloads folder. Simply open up a browser and copy & paste the above link into the URL Address bar. You may need to switch to a different browser, like Google Chrome or Mozilla Firefox. The Safari browser that comes with OS may not able to redirect you to the download page. Here's the download link for your reference. You need to download an older version (v9.x) of TeamViewer QuickSupport.

When you try to run the current version (v13) of TeamViewer QuickSupport, you will receive the following message.

Here are the steps to setup TeamViewer QuickSupport on an older Mac. So, if you're still running an older version of Mac Operating System(OS), you need to run an older version of TeamViewer.

As of, the current TeamViewer (version 13) only supports OSX 10.10.5 or later. In some cases, we may need to remotely access your system to troubleshoot the issue(s).

Teamviewer mac download old version