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“The Page Cannot Be Displayed" Error Message when we try to open a website on a Windows Server 2008-based computer

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Symptoms

Intermittently we may get "Page cannot be displayed" when they try to open a website.

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Cause

This problem occurs because there are some routers do not support the TCP autotuning settings in Windows Server 2008. This article helps you work around this problem.

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Resolution

To work around this problem, disable autotuning.
  1. Click Start, type the following in the Start Search box, and then press ENTER: runas /user:Local_Computer_Name\administrator cmd
  2. When you are prompted for the administrator account password, type the correct password, and then press ENTER.
  3. At the command prompt, type the following command, and then press ENTER: netsh interface tcp set global autotuninglevel=disabled. This command disables the Receive Window Auto-Tuning feature.
  4. Exit the Command Prompt window.
  5. Restart the computer.


Note If you want to enable autotuning, open a command prompt, type the following command, and then press ENTER: netsh interface tcp set global autotuninglevel=enabled

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More Information

By default, TcpWindowScaling is turned on in Windows Vista and in Windows Server 2008. Some routers cannot handle scaling features. Most of these routers are small home-based routers. We recommend that routers are upgraded so that they work correctly with TcpWindowScaling. Window scaling is a TCP feature.

The following autotuning settings are available if a router supports TcpWindowScaling:
  • Disabled: Fix the receive window at its default value.
  • Highly Restricted: Enable the receive window to grow beyond its default value, but do so very conservatively.
  • Restricted: Enable the receive window to grow beyond its default value, but limit such growth in some scenarios.
  • Normal: Enable the receive window to grow to accommodate most scenarios.
  • Experimental: Enable the receive window to grow to accommodate extreme scenarios.

    Note The Experimental setting can significantly decrease performance in typical scenarios. This setting should be used only for research purposes.
  • We tried to reproduce the issue with www.facebook.com.  We took a network trace and saw that the DNS server and the clients were able to resolve the ip address for facebook from the DNS server.

     

    dns.exe  4497       10.10.10.81          PRACDC              DNS         DNS:QueryId = 0x98CF, QUERY (Standard query), Query  for www.facebook.com of type Host Addr on class Internet
    dns.exe  4500       PRACDC              10.10.10.81          DNS         DNS:QueryId = 0x98CF, QUERY (Standard query), Response - Success, 69.171.228.70

     
     
    dns.exe  4497       10.10.10.81          PRACDC              DNS         DNS:QueryId = 0x98CF, QUERY (Standard query), Query  for www.facebook.com of type Host Addr on class Internet
    dns.exe  4500       PRACDC              10.10.10.81          DNS         DNS:QueryId = 0x98CF, QUERY (Standard query), Response - Success, 69.171.228.70

     
    In the trace we see that we send a HTTP:Request, GET /  for www.facebook.com, but we don't get any response.We try to Retransmit the packet and after 7 attempts we reset the connection.

     

    iexplore.exe         8824       PRACDC              www.facebook.com             TCP         TCP:Flags=......S., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575285, Ack=0, Win=8192 ( Negotiating scale factor 0x2 ) = 8192
  • iexplore.exe 8852 www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         8853       PRACDC              www.facebook.com             TCP         TCP:Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575286, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         8854       PRACDC              www.facebook.com             HTTP       HTTP:Request, GET /

    iexplore.exe         9062       PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         9138       www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         9139       PRACDC              www.facebook.com             TCP         TCP:Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         9295       PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         9540       www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         9541       PRACDC              www.facebook.com             TCP         TCP:[Dup Ack #9139]Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         10298    www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         10299    PRACDC              www.facebook.com             TCP         TCP:[Dup Ack #9139]Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         10787    PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         10903    www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         10904    PRACDC              www.facebook.com             TCP         TCP:[Request Fast-Retransmit from Seq3990621658]Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         11169    www.facebook.com             PRACDC              TCP         TCP:Flags=...A..S., SrcPort=HTTP(80), DstPort=53287, PayloadLen=0, Seq=3990621657, Ack=4062575286, Win=14600 ( Negotiated scale factor 0x9 ) = 7475200

    iexplore.exe         11170    PRACDC              www.facebook.com             TCP         TCP:[Request Fast-Retransmit from Seq3990621658]Flags=...A...., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         11611    PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         12322    PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         13606    PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         15134    PRACDC              www.facebook.com             TCP         TCP:[ReTransmit #8854]Flags=...AP..., SrcPort=53287, DstPort=HTTP(80), PayloadLen=253, Seq=4062575286 - 4062575539, Ack=3990621658, Win=32775 (scale factor 0x2) = 131100

    iexplore.exe         22806    PRACDC              www.facebook.com             TCP         TCP:Flags=...A.R.., SrcPort=53287, DstPort=HTTP(80), PayloadLen=0, Seq=4062575539, Ack=3990621658, Win=0 (scale factor 0x2) = 0

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Keywords: kb

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Article Info
Article ID : 2761089
Revision : 1
Created on : 1/7/2017
Published on : 1/21/2013
Exists online : False
Views : 290