Hi,
I think you should create a new Thread to make it vissible to all, by the way.
Do you stop the Symantec Services before you reinstall the software( ? Please see attached picture for your reference or you can follow the below link. I hope it will help you
Stop the following services
1. Symantec Embedded Database
2. Symantec Endpoint Protection Launcher
3. Symantec Endpoint Protection Manager
4. Symantec Endpoint Protection Manager Webserver
https://support.symantec.com/en_US/article.HOWTO17915.html
And also i think you should follow this link first before doing anything
https://support.symantec.com/en_US/article.TECH224034.html