Can't make a temporary directory for the update download at /Users/admin/Library/Application Support/TeamViewer Host/TeamViewer Host 12.0.75813.
Hi Try the following:
* Warning: It is a safe measure to back up your computer before doing this step.
Reset folder permissions
Open your home folder, right-click on the home folder and select Get Info. Click on the lock icon ? in the lower right and type in your password so it unlocks ?.
Then click on gear menu ⚙ and select Apply to enclosed items....