TIME_WAIT from netstat

Adler Phil 21 Reputation points
2021-01-14T08:50:08.593+00:00

We have two 2012 window servers, let’s call them server A and server B. When server A was trying to connect server B, we found there were RPC error and TIME_WAIT from server B. We have tried change TcpTimeWaitDelay to 60 in registry and rebooted server B. But the problem still existed. Please help advise.

Windows Server 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
1,538 questions
{count} votes

Accepted answer
  1. Sunny Qi 10,901 Reputation points Microsoft Vendor
    2021-01-14T09:44:07.087+00:00

    Hi,

    Thanks for posting in Q&A platform.

    TCP TIME_WAIT is a normal TCP protocol operation, it means after delivering the last FIN-ACK, client side will wait for double maximum segment life (MSL) Time to pass to be sure the remote TCP received the acknowledgement of its connection termination request. By default, MSL is 2 minutes. For the maximum, it can stay in TIME_WAIT for 4 minutes known as two MSL.

    Please refer to the following screenshot.

    56555-state-diag.png

    From Network perspective, TCP TIME_WAIT status is just a normal behavior that after closing the session, TCP stack will hold the high port for little more time to ensure the other side receive the last FIN-ACK packet and no more data will be received in this conversation. TIME_WAIT is not the problem. I would suggest you focus on RPC error for this issue.

    For RPC error, common causes of RPC errors include:

    Errors resolving a DNS or NetBIOS name.
    The RPC service or related services may not be running.
    number of connectivity Problems with network connectivity.
    File and printer sharing is not enabled.

    To narrow down the issue, I would suggest collect network traffic for further troubleshooting.

    Please understand, analysis of network traffic is beyond our forum support level. I would suggest you open a case with Microsoft where more in-depth investigation can be done so that you would get a more satisfying explanation to this question.

    You may find phone number for your region accordingly from the link below:

    Global Customer Service phone numbers
    https://support.microsoft.com/en-us/gp/customer-service-phone-numbers

    Best Regards,
    Sunny

    ----------

    If the Answer is helpful, please click "Accept Answer" and upvote it.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    2 people found this answer helpful.

0 additional answers

Sort by: Most helpful