Only if you wiped out everything that including the database, data and certs, BUT NOTE! this will delete everything! apps, content, etc. Now the question, can you elaborate the "Due to some issue and unable to open qlik sense server." maybe we could help you whats that error and no need to wiped out the QS server environment.
Giuseppe Novello Principal Technical Support Engineer @ Qlik
Okay, well uninstall Sense for a Ops monitor app failing, wont fix the underline issue in my opining. anywasy for the error 401 Unauthorized, have you had the chance to search the Qliks KB's? Here is the location: