OverviewIn at least version 6.4.2, there is a reported issue that when there is a policy which accelerates traffic to the 'ALL' application, SAP will no longer allow logins. SAP will continue to work for anyone who currently logged in when the policy was put in place, but all new connections will fail.
CauseThis appears to be caused by a software defect.
WorkaroundCreate a policy which does not accelerate 'ALL', but instead accelerates specific applications, i.e: SAP, HTTP, CIFS, LDAP, etc. By excluding 'ALL' from the list of applications to be accelerated, SAP will continue working.
ResolutionUpgrade to the latest firmware available. This problem does not exist in our latest firmware version.