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I have computer with windows server 2008 r2 and a router works as dhcp server. I created a domain on the server and I created users.

I made the clients access the network via new users of domain then the computers work fine but after sometime some of them cant access folder of domain server except by using it's IP. Sometime when I change the IP of the client then it's working fine but after a while the problem comes again.

I appreciate your help.

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ipconfig/all Windows IP Configuration Host Name . . . . . . . . . . . . : ahgh Primary Dns Suffix . . . . . . . : fws.com Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : fws.com wr Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : wr Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection – mr man Aug 22 '13 at 6:53
    
Physical Address. . . . . . . . . : 00-19-DB-83-E5-12 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.1.67 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.66 DHCP Server . . . . . . . . . . . : 192.168.1.66 DNS Servers . . . . . . . . . . . : 192.168.1.66 8.8.8.8 – mr man Aug 22 '13 at 6:54
    
192.168.1.66 is the router ip – mr man Aug 22 '13 at 7:24
    
the router dns config as follow: – mr man Aug 22 '13 at 7:24
    
router#dns-server 192.168.1.66 8.8.8.8 – mr man Aug 22 '13 at 7:25

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