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    Windows 10 PC's not renewing DHCP lease

    Scheduled Pinned Locked Moved IT Discussion
    networkingwindows 10
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    • DashrenderD
      Dashrender @dafyre
      last edited by

      @dafyre said in Windows 10 PC's not renewing DHCP lease:

      Your DHCP range isn't close to being full, is it?

      Man, I wouldn't think that would prevent a renewal.

      dafyreD scottalanmillerS 2 Replies Last reply Reply Quote 0
      • DashrenderD
        Dashrender
        last edited by

        Try updating the firmware on the phone as well.

        But hopefully the logs will tell you something.

        How long is your lease on DHCP?

        1 Reply Last reply Reply Quote 0
        • RomoR
          Romo
          last edited by

          @dafyre said in Windows 10 PC's not renewing DHCP lease:

          Your DHCP range isn't close to being full, is it?

          Its a remote office, with basically only 5 PC's, the phones and a couple of printers. The range has a lot of free ips still.

          @Dashrender said in Windows 10 PC's not renewing DHCP lease:

          Try updating the firmware on the phone as well.

          But hopefully the logs will tell you something.

          How long is your lease on DHCP?

          Changed the lease to 24 hours, before todays morning report.

          1 Reply Last reply Reply Quote 0
          • black3dynamiteB
            black3dynamite
            last edited by

            Have you already try running this command to reset winsock?
            netsh winsock reset

            1 Reply Last reply Reply Quote 0
            • dafyreD
              dafyre @Dashrender
              last edited by

              @Dashrender said in Windows 10 PC's not renewing DHCP lease:

              @dafyre said in Windows 10 PC's not renewing DHCP lease:

              Your DHCP range isn't close to being full, is it?

              Man, I wouldn't think that would prevent a renewal.

              I wouldn't either, but I ran into that once or twice at my last job.

              1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller @Dashrender
                last edited by

                @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                @dafyre said in Windows 10 PC's not renewing DHCP lease:

                Your DHCP range isn't close to being full, is it?

                Man, I wouldn't think that would prevent a renewal.

                It does. Depends on race conditions, but it definitely happens.

                DashrenderD 1 Reply Last reply Reply Quote 0
                • DashrenderD
                  Dashrender @scottalanmiller
                  last edited by

                  @scottalanmiller said in Windows 10 PC's not renewing DHCP lease:

                  @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                  @dafyre said in Windows 10 PC's not renewing DHCP lease:

                  Your DHCP range isn't close to being full, is it?

                  Man, I wouldn't think that would prevent a renewal.

                  It does. Depends on race conditions, but it definitely happens.

                  I guess I need to re-read up on the DHCP process - I thought (at least with Windows) that the client machine did a check at the 50% timeframe and renewed then, thereby never actually reaching an expired state. But that was 20+ years ago when I read the MS docs on it... so I could have a faulty memory.

                  RomoR scottalanmillerS 2 Replies Last reply Reply Quote 0
                  • RomoR
                    Romo @Dashrender
                    last edited by

                    @Dashrender I do believe is still the same.

                    1 Reply Last reply Reply Quote 0
                    • scottalanmillerS
                      scottalanmiller @Dashrender
                      last edited by

                      @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                      @scottalanmiller said in Windows 10 PC's not renewing DHCP lease:

                      @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                      @dafyre said in Windows 10 PC's not renewing DHCP lease:

                      Your DHCP range isn't close to being full, is it?

                      Man, I wouldn't think that would prevent a renewal.

                      It does. Depends on race conditions, but it definitely happens.

                      I guess I need to re-read up on the DHCP process - I thought (at least with Windows) that the client machine did a check at the 50% timeframe and renewed then, thereby never actually reaching an expired state. But that was 20+ years ago when I read the MS docs on it... so I could have a faulty memory.

                      It does, but machines powering on and off and such can disrupt that process.

                      DashrenderD 1 Reply Last reply Reply Quote 0
                      • DashrenderD
                        Dashrender @scottalanmiller
                        last edited by

                        @scottalanmiller said in Windows 10 PC's not renewing DHCP lease:

                        @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                        @scottalanmiller said in Windows 10 PC's not renewing DHCP lease:

                        @Dashrender said in Windows 10 PC's not renewing DHCP lease:

                        @dafyre said in Windows 10 PC's not renewing DHCP lease:

                        Your DHCP range isn't close to being full, is it?

                        Man, I wouldn't think that would prevent a renewal.

                        It does. Depends on race conditions, but it definitely happens.

                        I guess I need to re-read up on the DHCP process - I thought (at least with Windows) that the client machine did a check at the 50% timeframe and renewed then, thereby never actually reaching an expired state. But that was 20+ years ago when I read the MS docs on it... so I could have a faulty memory.

                        It does, but machines powering on and off and such can disrupt that process.

                        uh, what? Sure, now if a machine is off, and the half way point, or the full expire time hits, sure, when the machine comes back online - it has to basically start over...

                        The OP says the machine is loosing it's IP what appears to be overnight. OK, so let's assume the lease expired while the computers were in powersaver mode, or simply off. I would expect them to be turned on and simply go through a DHCP request - but the OP says a reboot it required to get back on the network. so something isn't working from the client side.

                        So the NIC has been updated and that didn't solve it.

                        Any chance the switch could be the culprit? Are there updates available for the switch?

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