Hosts unable to ping each other in packet tracer

[Spacketer]

I am running a simulation in packet tracer and I have OSPF configured on the routers. All the connections are green yet I am unable to ping between hosts. I've uploaded the packet tracer file as well as the topology picture. Any help would be appreciated.

[Martin L]

start with tracing and pings; PC-B can get to Sw B but not to Router' B 192.168.1.9 or serial interface IP.   check routing table on that router, he has no network where PC B is.  aka show ip route 172.17.10.10.   Both Sw B and Router B OSPF config has a typo and mis-configuration in OSP section. fix that to get some routes on B side.   PC B should get to Router Aside.

Sw A has no routing protocol and routing disabled.

Regards, ML
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