Even though Opera is simple to use, and performs well, there can occasionally be problems. This section gives an overview of known problems and possible solutions, Click on the problem to see the solution.
FTP not completely loaded
This problem can arise when using FTP with a proxy. The solution is to turn off the proxy and try again.
Problems with different communications modules (winsock)
There are very many different communications modules (winsock) available. Sometimes these can be very different in the problems produced. In the worst case the machine can hang. In order to solve this problem Opera has some choices under Advanced Preferences which can be worth trying if the programme does not behave as expected.
In some cases Opera must be set to use Synchronous Domain Name Service (DNS). This makes Opera somewhat slower. It must often be chosen if you use PC-NFS 5.1 or Microsoft TCP/IP.
If you use PC-NFS 5.0, you may have to upgrade some modules of that system, as well as set the network buffer size to 1 kB.
If you have tried to set Synchronous DNS, and the network buffer to 1 kB or a higher value (eg. 20 kB) without success, you can also try setting down total connections to 1, for both combined and a single server. This makes Opera slower, but also behave better when using the communications module.