Download BgInfo: https://docs.microsoft.com/en-us/sysinternals/downloads/bginfo

PowerShell command: (Run as Administrator)

(Get-ItemProperty -Path 'HKLM:\SOFTWARE\Wow6432Node\TeamViewer').ClientID | Out-File -FilePath c:\teamviewerid.txt

Fetches the TeamViewer ID from registry and saves it into a .txt file.

Navigate to "shell:startup".

Create a new shortcut and add the following:

C:\Users\***\bin\Bginfo64.exe config.bgi /timer:0 /nolicprompt /silent /taskbar

BgInfo will now run on startup.

Adding a Custom Field:

End result: