two weeks ago we upgradeed our two PSA5000 (8.3R7) by two PSA7000, running 9.1R5. Since then our Apple Users complain, that the Host Checker is not running reliable anymore.
Very often it crashes right after start and the user is not able to log in via web browser.
I checked several user computers and it seems, that the crashes does not depend on the used MacOS version. We see crashes on 10.11, 10.13, 10.14 and 10.15.
Strangly, the HC does not crash everytime. Sometimes the user can start over the login process several times without any issues. And on next day (or after next reboot), the HC crashes on nearly every try. As an example, here is a crash log.
Process: HostChecker 
Path: /Users/USER/Library/Application Support/Pulse Secure/HostChecker.app/Contents/MacOS/HostChecker
Version: 1.0 (1)
Code Type: X86-64 (Native)
Parent Process: ??? 
Responsible: HostChecker 
User ID: 501
Date/Time: 2020-05-06 08:32:58.954 +0200
OS Version: Mac OS X 10.15.3 (19D76)
Report Version: 12
Bridge OS Version: 4.2 (17P3050)
Anonymous UUID: F677533B-A3BE-80FD-9919-960DED7BBB60
Sleep/Wake UUID: 0B39922A-B41F-478C-A390-50D99B5EE020
Time Awake Since Boot: 4200 seconds
Time Since Wake: 1000 seconds
System Integrity Protection: enabled
Crashed Thread: 7
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000107a6742c
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler 
---stripped Memory addresses----
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Activity Tracing 256K 1
CoreServices 116K 1
Foundation 8K 2
Kernel Alloc Once 8K 1
MALLOC 175.5M 29
MALLOC guard page 32K 8
MALLOC_NANO (reserved) 384.0M 1 reserved VM address space (unallocated)
Memory Tag 242 12K 1
STACK GUARD 56.0M 11
Stack 13.1M 11
VM_ALLOCATE 72K 5
__DATA 28.1M 308
__DATA_CONST 49K 4
__FONT_DATA 4K 1
__LINKEDIT 356.3M 12
__OBJC_RO 32.0M 1
__OBJC_RW 1780K 2
__TEXT 240.5M 303
__UNICODE 564K 1
mapped file 43.6M 14
shared memory 660K 21
=========== ======= =======
TOTAL 1.3G 738
TOTAL, minus reserved VM space 948.7M 738
On our old PSA5000, running 8.3R7, we had no such issues.
Does anyone else experiencing such problems with MacOS and HC?
Please open a support ticket with us to debug this issue further, which would give us an oppurtunity to raise a bug report with our development team.
Till now no new info about this case.
I now tested this on our old PSA5000, which was running 8.3R7.1 and where the HC never had problems on MacOS. I updated it to 9.1R6 and...voila...HC now crashes on MacOS, too.
But I wonder that nobody else seem to have any problems with the HC on MacOS?
So I tested whether it might has something to do with the regional settings and changed my Test-Mac to US, but that did not solve the problem.
It is really strange.