Hi @ヘルプ,
We're happy to read your first post in our Community!
Do you have any questions regarding TeamViewer and Windows Server 2019?
For your information, the latest version is compatible with Windows Server 2019 as stated in our dedicated article: https://www.teamviewer.com/en/global/support/knowledge-base/teamviewer-remote/download-and-installation/supported-operating-systems-for-teamviewer-remote/
Let us know if we can assist you further!
Best,
Jen