KB5005076 and 32-bit IIS crashes - Anti-Malware interference!!! 13. September 2021 DeanMay@phidiax.com Phidiax Technology, WCF / Services / AppFabric / IIS (0) After installing KB5005076 on Windows Server 2012 R2, IIS application pools which are set to allow 32 bit mode begin to crash, writing BEX errors (Buffer Overflow Exception) to the event log, referencing either w3wp or regsvr32 as the faulting process. [More]