Forum Discussion
JohanBar
Apr 12, 2025Copper Contributor
Blotched Exchange 2019 CU15 64 update.
Dear Microsoft
The current update to Exchange 2019 CU15 64 installs .Net ver 4.0.0.0 32 bit as 64 bit. This broke most of the .Net programs on my Server. All .Net programs now run in 32 bit *x86) mode INCLUDING all the Exchange services !!!!
Several other programs like Malware byte Firewall helper failed instantly running in x86 modes.
See screenshots below.
You need to withdraw the CU 15 update immediately. Provide a fix to sort this mess or instruct admins to restore backups.
Regards
Johan