When you see a dialog saying your TeamViewer trial has expired, this means that TeamViewer was installed on the device and someone chose Company/ Commercial use or Bothof the above upon installation to classify the intended usage.
Server operating systems
Alternatively your machine runs a Windows Server operating system, classifying usage as commercial automatically.
What to do if a licensed device shows 'Trial Expired'
The alert 'Your trial has expired' may show up on a device used with a commercial license, if the licensed account is not logged in. TeamViewer licenses are account-based, meaning the license is only recognized when a licensed user logs in to the device.
To sign in, click the words 'Sign in' in the upper left corner of the TeamViewer application, and enter the credentials for your licensed TeamViewer account.
Click the silhouette of a person in the upper left corner, next to the words 'Sign in'
Enter the account credentials for the licensed TeamViewer account in the fields provided
You can verify licensing afterwards using the About TeamViewer window.
If you believe that you installed TeamViewer and chose Company/ Commercial use or Bothof the above accidentally, and you are using TeamViewer excusively for personal, non-commercial use, then we may be able to remove the trial period for you so that TeamViewer reverts back to the free version.