check this out and see if it helps

https://onlinehelp.sageenterpriseintelligence.com/2026.R4/installation/application-install/install-web-server/uninstall-web-server-manually

Additional thing from my side.

In SEI's database instance, SEICube and SEILicense database will need to be disposed manually.

There's probably additional work to properly remove SEI if it was installed in a shared server but in my case, since SEI is in its own server, I had a choice to terminate the whole server instead which was the option I chosen (not enough time after backing up the SEI database, SEI Central Point, and details of the installation for future recovery if it is ever needed).

Additional thing from my side.

In SEI's database instance, SEICube and SEILicense database will need to be disposed manually.

There's probably additional work to properly remove SEI if it was installed in a shared server but in my case, since SEI is in its own server, I had a choice to terminate the whole server instead which was the option I chosen (not enough time after backing up the SEI database, SEI Central Point, and details of the installation for future recovery if it is ever needed).