If you are unable to delete a WebSphere directory tree,
it may be because the path is too long. For example, you may be
unable to delete the following file, which is used by Adobe® LiveCycle®
Rights Management:
C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps\[machine name]Node01Cell\LiveCycleES4.ear\rest-webservice.war\WEB-INF\classes\com\adobe\rightsmanagement\webservices\rest\serialization\objects\RestPolicyInfoSerializer$PolicyInfoStruct.class
To resolve this problem, map a drive to the location from which
you want to delete files (in this example, C:\Program Files\IBM\WebSphere\AppServer\profiles\AppSrv01\installedApps)
and then delete the files from that mapped drive.