Forum Discussion
Hybrid Configuration Wizard fails to run – manifest download error on all machines
Hello, I am unable to run the Exchange Hybrid Configuration Wizard (HCW) for our Exchange 2016 environment. The issue occurs on multiple machines and networks, so it does not appear to be a local co...
havelkar Have you seen https://support.microsoft.com/en-us/topic/can-t-install-or-open-exchange-server-hybrid-configuration-wizard-hcw-d71fdedb-163f-46d2-87e3-983bdca133c0? It looks like it documents a step you might not have done to resolve this. These steps are also covered in this blog post - https://blog.rmilne.ca/2024/02/29/unable-to-install-or-launch-exchange-hcw/
FYI, I have encountered this several times. One other thing I did that worked a few times was to go into Control Panel and uninstall the HCW altogether and then reinstall it.
Hope this helps!