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Windows Thread, Unathorize old DHCP server in Technical; Just checked our DHCP. In "Manage Authorized Servers": I have four entries: One server is in twice, with it's correct ...
  1. #1
    kennysarmy's Avatar
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    Unathorize old DHCP server

    Just checked our DHCP.

    In "Manage Authorized Servers":

    I have four entries:

    One server is in twice, with it's correct IP (10.7 range) and again with a very old IP (10.10 range).

    Is it safe to remove the old entry?

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    ChrisH's Avatar
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    Even if it does take both entries out you can authorise it again in seconds.

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    Michael's Avatar
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    It should be safe, however you can also disable the DHCP Server service manually.

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    kennysarmy's Avatar
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    Hmmmm I clicked Unathorize and after a while of egg-timerness I get control again and it's not removed it.

    I have:

    fp2.domain 10.7.43.152
    fp2.domain 10.10.3.2
    fp2.domain 10.7.43.153
    fp6.domain 10.7.43.156

    Might I have to remove both fp2 entries?
    Is there a risk if I do that of breaking anything?

    Thanks.

  5. #5

    Michael's Avatar
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    Probably best if you make the change when the network's quiet.

    I did have it happen once that no matter what I tried the entry wouldn't/couldn't be deleted, so disabling DHCP Server did the trick. Similar to your situation, it was an old server no longer used, however it was the same IP range, not a totally different range.

  6. Thanks to Michael from:

    kennysarmy (18th May 2011)

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    kennysarmy's Avatar
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    OK - might wait till half-term - does nt seem to be causing problems but just tidying things up before we migrate our AD to 2008 servers.

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