Hi,

FileMaker Pro 6 has been running on Windows XP Pro happily for more than an year. Some files were shared so other FileMaker users in the network were able to access shared files via TCP/IP protocol.(in Multi-user mode)

Suddenly, the other network users stoped seeing these shared files.

TCP/IP network is proved to be operational - I can ping all networked computers,

I can browse the network and I can copy/move files between the computers.

Even more, from that Windows XP workstation FileMaker "sees" all remote PCs sharing FileMaker files and using OpenRemote can open theirs shared files.

Sharing works only one direction.

I checked that:

-IP addresses are correct

-No firewall is running on Windows XP box

-I reinstalled FileMaker - but no luck.

Which port is using FileMaker?

How can I check if there is some software running on that WinXP box and

preventing FileMaker from using the port and sharing its files?

Any ideas?

Thank you for your help in advance!

I run port scanner on that WinXP box and it shows me that

FileMaker is listenning to

protocol port IP address

TCP 5003 192.168.0.200

UDP 5003 192.168.0.200

I run the same test on another PC running Win2000 where FileMaker file sharing

works fine. The results there were:

TCP 2399 0.0.0.0

TCP 5003 192.168.0.200

UDP 5003 192.168.0.200

There is one more line with IP 0.0.0.0 which is missing on the first PC.

I found also some spyware running on that computer: OSSPROXY.EXE

Do you think that the spyware could be the culprit?

Thank you for your help in advance!

http://www.iana.org/assignments/port-numbers

It looks like 2399 is needed by FileMaker so something is blocking/conflicting and causing you trouble but I have no idea what it would be. Hope you figure it out!

--ST

Thank you for your reply Steve!

I think I found out what caused the problem ...

There is spyware called ossproxy.exe from Marketscore.

Just for test I installed it on a new PC and FileMaker sharing stoped working.

Unfortunatelly it did not work back when i remove it!

It seems to me that the spyware also corrupts some windows system files.

Where you able to fix the problem? We are having the same trouble on a Windows 2000 machine, I Spybot found the ossproxy.exe and removed it, still will not share the database from that machine.