Hi, this is the problem that I dont know how can I solve it, because, I am not sure where the problem comes from. I use my laptop dell-d630, vista business, 2gb, and the default domain - workgroup. when I connect to the network in my work, and if I need to print or use any other computers connected to the network, I need to login first to the domain. the problem is, when I boot the machine, it works fine, but some time past, the connection is lost, and if I try to use the print or the other computer connected to the network, the message 0x80070043 is showed. I have already tried to use wireless, network cable, IP dynamic and static, as well as dns dynamic and static, but on any situation, after some hours, I cannot connect to any one of the computers on the LAN. The problem is solved only if I boot the machine again. does anyone know how to solve it, or have any idea? thanks

Hi, Thank you for posting. Please try the following to narrow down the issue: 1. When the issue occurs, please check the following: 1) Can you access other resources (except the printer or other computer on the network), such as some websites? 2) Check if you can ping other computers on the network successfully; and see if other computers can ping this computer. 2. If there is a new version of the NIC driver available, please remove the old driver and try this one. 3. Disable Save Power function of the NIC: 1) Click Start, right click on Computer and choose Properties. 2) Click Device Manager. 3) Navigate to your NIC, right click on it and choose Properties. 4) Choose Power Management tab. 5) Please uncheck Allow the computer to turn off this device to save power." 6) Restart the computer and check if it works. If the issue persists, please also run ipconfig /all in a elevated command prompt when the issue occurs and post the result to this thread for our further research. Hope this helps. Thanks. Nicholas Li - MSFT