Hi,
I use ArcGIS 10.2, I try installing ArcHydro 10.2 and I kept getting this error message..Please I need your assistance.
Please look at this post. You may have a permission or corrupt Window installer:
http://answers.microsoft.com/en-us/windows/forum/windows_8-performance/get-error-1723-there-is-a-problem-with-windows/3d68fc4b-c968-4796-a270-27027a52de3f
Christine Dartiguenave
Esri Water Resources Team