I have successfully updated FMPA 15.0.2 and FMS 15.0.2 on the same windows server but update FMP 15.0.2 failed.
Update FMP 15.0.2 on another Windows server 2008 failed as well. There is one difference beteende the clients and that is that FMP uses a volume license.
1. Download works
2. Filemaker PRO close down
3. Blink and than nothing...