tecnicoa:
I install the client software and I can not in any way to access the server. any solution or special configuration?

According to your problem, I suggest you to do the following steps to make sure that all old ActiveX are removed from your computer.
1, Delete all files under "C:\WINDOWS\Downloaded Program Files"
2, Unzip the file named "WebClient.cab" in "C:\Program Files\DVR Server", then copy all files into "C:\WINDOWS\system32", when the copy finished, do not click your mouse or take other operations, but just press DELETE key to delete all of them.

Then you have to re-install WebClient.msi on your computer. Also please modify the web port of the software to numbers after 1000(such as 1280) to make sure the port is keep listening when software is running. Then access software with IE or just running the shortcut on your desktop named "WebClient".

If problems still, please refer to our tech/sales for help.