You can silently uninstall ArcGIS Workflow Manager Server or the Web App by running the msiexec.exe command.
- Open a command prompt.
- Execute the following command to uninstall ArcGIS Workflow Manager Server or the Web App:10.8.1
For ArcGIS Workflow Manager Server:
msiexec /x {C0F0FCAB-2B65-4B8E-8614-531690B7CF9C} /qb
For ArcGIS Workflow Manager Web App:
msiexec /x {96A58AC8-C040-4E4A-A118-BE963BF1A8CF} /qb