Hello community, i hope some1 could help us out.

We have a big program made in Delphi XE2 that is working on about a hundred computers, the problem is we get the next error:

"unable to complete network request to host XXX
error writing data to the connection
an existing connection was forcibly closed by remote host"

But only about 10% of computer get that error.

We cannot find a solution to why it happens, it happens on a connection from Delphi to Firebird (Select, Update, Insert) and in any part of the program.

Most of the groups of computer have 1 local server where they connect, but some computer have our program and FB Server on the same PC but still gives this error.


Thank you in regards and i hope some1 could points us in the right direction.