Skip to main content

RECOMMENDED: Click here to fix Windows errors and get the most out of your system performance

TeamViewer has proven itself to be good software from time to time. But, many users use it from version 5 to the latest version v12 on Linux, OSX and of course Windows.


Users of Windows 7 64-bit, TeamViewer v12 refused to connect to their backend; the error:

It is not ready. Check your connection.

Delete TeamViewer from Hosts file

The TeamViewer entry in your computer's hosts file is most likely corrupted. It may show totally incorrect addresses and data, and we suggest that you remove the entry. Once you have reopened it, the entry will be recreated and we hope the problem does not happen again!

  1. Navigate to the location C >> Windows >> System32 >> Driver >> Etc accessing after opening the file explorer. First click on This Computer or My Computer on the left side of the page to find and open your local hard drive C.
  2. If you can't see the Windows folder, you may need to enable the option to see hidden files and folders. Click the View tab in the File Explorer main menu and select Show / Hide
  3. Hidden items in File Explorer checkbox to view hidden files and save these settings until you change them again.
  4. Find the Hosts file in the Etc folder, right-click and choose Open with Notepad. Use Ctrl + F and be sure to type "teamviewer" in the Find what field before clicking Next Search.
  5. In the archive, find the TeamViewer section. You should start with "#TeamViewer" and make sure you choose everything that goes with it, right-click the selection and select the Delete button from the context menu.
  6. Click File >> Save to save the changes or use the Ctrl + S key combination. Exit Notepad and restart your computer. Check if the problem comes from TeamViewer “Not Ready. Error message «Check connection».

Check your proxy settings

If you are not using a proxy or firewall, but still have a connection problem, you may need to change your Internet settings. After checking that no proxy works, go to Control Panel> Network and Internet> Internet Options> Connections> LAN Settings and disable all alternatives.


Change your DNS address

Users said they could fix the problem basically by changing the DNS provided by their ISP (Internet Service Provider) and starting to use another one. It may be a DNS of a computer where the problem does not exist, but many users have basically used Google's DNS to fix the problem.


Repair TeamViewer in Windows 10

If the problem persists and your Windows 10 system is affected, we have several additional solutions that you can try. For more information, see this troubleshooting guide. Remember to run a full system antivirus scan, as malware can also prevent you from opening certain applications and programs. Please note that your antivirus program can sometimes block Teamviewer.

So follow the above tips to fix your Teamviewer issues on Windows 8.1, 10 or Windows 7. Even if you have any doubts about this post, please use the comment section below to let us know.

RECOMMENDED: Click here to fix Windows errors and get the most out of your system performance