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

Forum Discussion

ndaems_145583's avatar
ndaems_145583
Icon for Nimbostratus rankNimbostratus
Apr 02, 2019

Exchange Hybrid Free/Busy - APM 401 error with original iApp

Hi We are trying to deploy Exchange iApp in a Hybrid deployement Everything works well except the Free/Busy feature in O365. After doing some research we found a workaround by adding 2 URL at i...
application delivery
BIG-IP Access Policy Manager (APM)
iApps
Guillaume_B's avatar
Guillaume_B
Icon for Nimbostratus rankNimbostratus
Mar 05, 2020

Hello,

 

I have the same issue with iApp f5.microsoft_exchange_2016.v1.0.2 on hybrid o365/on-prem configuration. From o365, users can't see free/busy information of on-prem mailboxes. Does anyone have a validated solution?

 

is the workaround " by adding 2 URL at in the hybrid_bypassed iRule "/ews/exchange.asmx" "/autodiscover/autodiscover.xml" " will allow not only o365 but also other users to bypass APM policy ?

 

Thank you

 

Guillaume