Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

mahir's avatar
mahir
Icon for Altostratus rankAltostratus
Jun 15, 2016

Client Outlook MAC 2016

I have a problem with OUTLOOK MAC 2016 When I say Mac Outlook Client doesn't work means all of our Mac clients are getting prompt in the MAC Outlook - Error shows Unknown user name or bad password...
application delivery
ASM Advanced WAF
LTM
security
Tikka_Nagi_1315's avatar
Tikka_Nagi_1315
Historic F5 Account
Jun 20, 2016
HTTP/1.1 401 Unauthorized is self explanatory. Do have an ASM policy applied to the virtual server? Are you seeing any errors in /var/log/ltm or /var/log/asm on BIGIP? Did this ever work? Or were there any changes introduced which caused the problem?