Unanswered: TNS 12571 Error on Select Client Win 2000 Machines
I have Oracle 9i 188.8.131.52.0 on a Win 2000 Server and about 12 client installs of Oracle Discoverer 4.1.48.06 on various Windows OS. Three of these clients return TNS-12571 errors using tnsping80 (by coincident all three machines are laptops). I have a high level of confidence that all supporting .ora file are error free, as I have at least 10 other install that work without any problems.
I have read many postings on Metalink that point to two areas. The first is that there is a network issue and suggest replacing the network card. The second have identified some software that interfere with network traffic. I have exhausted both of these leads and I'm looking for other possibilities.
I was thinking that the numerous Microsoft "Hot Fixes" or patches might at least be contributing to the problem.
I've found the problem. Thanks for your help. I was able to obtain a new laptop with a clean image and started installing client software. After installing software to support a wireless modem I got the TNS 12571 error. After uninstalling a piece of the wireless software used for TCP traffic control and compression my tns connections came back to life.