This issue occurs due to a samba bug which was introduced where large LDAP searches using SASL wrapping stopped working. Samba version 4.4.2 (used in PCS 8.1R12, 8.2R5, 8.3R1 and above / PPS 5.3R5 and above) is affected by this bug.
Pulse Connect Secure versions affected:
- 8.1R10 - 8.1R11
- 8.2R5 - 8.2R7
Pulse Policy Secure versions affected:
For more information, refer to https://bugzilla.samba.org/show_bug.cgi?id=11872.