Gateway is Uninstalling Abruptly

Hi Sudharshan1919 ,

Do you mean that the computer deleted your program without the user's permission?
If so, please check if your computer meets the minimum requirements and related restrictions according to the gateway.

• .NET Framework 4.7.2 (Gateway release December 2020 and earlier)
• .NET Framework 4.8 (Gateway release February 2021 and later)
• A 64-bit version of Windows 8 or a 64-bit version of Windows Server 2012 R2 with current TLS 1.2 and cipher suites
• 4 GB disk space for performance monitoring logs (in default configuration)

Related considerations: Install an on-premises data gateway 

Here are some documentation on Windows automatic program deletion, hope they help.

Windows 10 Delete Your Programs Without user permission. how to fix this issue. 

https://www.howtogeek.com/243581/windows-10-may-delete-your-programs-without-asking/ 

https://www.reddit.com/r/Windows10/comments/3twg2m/windows_10_is_uninstalling_user_apps_without/ 

Best Regards,
Winniz