Event ID: 4201 Source: Tcpip

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Event ID: 4201 Source: Tcpip

Source: Tcpip

Type: Information

Description:
The system detected that network adapter Intel(R) PRO/100 VM Network Connection was connected to the network, and has initiated normal operation over the network adapter.

English: Request a translation of the event description in plain English.

Comments:
EventID.Net
This is just an informational message and occurs for Windows servers (clustered or not) and Windows workstations. Windows detects the LINK activation for the Ethernet 10/100BaseT adapter. But it is a very good indication for situations when there is a cable problem or switch/hub issue.
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Anonymous
In my case this problem was caused by a switch problem. I replaced the switch with a new one and the event disappeared.
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Raf Sura
I was getting this event every few seconds after I recovered my corrupted hard drive. A router restart solved the problem.
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Joe Goldsmith
I came across this error on a system. The System Log was full of these events. I noticed that the wireless network icon was indicating that Windows was trying to acquire a network address. I had changed the WPA-PSK password recently and had not updated it on the machine. Every time the machine tried to update (about every 10 seconds) it recorded an error. I updated the password and the error has gone away.
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Selma
I was getting literally thousands of 4201 error messages on my server over a three-week period. It turned out that the switch was failing. After I replaced the switch, the problem ceased to reappear.
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EventID.Net
See also ME325487.
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Sam Bonsett
This error may appear in a cluster environment. See ME276457 and ME239924.
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Links: ME276457, ME239924, ME325487, MSW2KDB

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