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Intel® Ethernet Adapter Limited at 100 Mbps

Content Type: Troubleshooting   |   Article ID: 000091032   |   Last Reviewed: 10/05/2022
Description Resolution Additional information

Environment

Operating System

Windows 11* Family, Windows 7 family*, Windows 8.1 family*, Windows 8 family*, Windows® 10, 64-bit*

Description

The Intel® Adapter stopped working at 1000 Mbps, it is only working at 100 Mbps with Cat6 cable and 1000 Mbps switch

Resolution

Follow these troubleshooting steps:

  • Use OEM drivers for OEM Network Adapters
  • Check if the Network Adapter is compatible with the current system configuration
  • Check if any changes to hardware or software were made recently
  • Test the Adapter on a different system and use the Adapter on a different networks and/or with a different cable supporting 1.0 Gbps connection
  • Test the Adapter on a network where another device works at 1Gb/s
  • Test with another compatible OS

If the OS is Microsoft Windows*, check the Windows Auto-Tuning settings
To disable Windows* AutoTuning, run the following command:
netsh int tcp set global autotuninglevel=disabled
To enable Windows* AutoTuning, run the following command:
netsh int tcp set global autotuninglevel=normal

Multiple customers confirmed that changing this setting has overwritten a speed limiting bug. If two systems are available, set the global autotuning level on the first one to disabled and on the second one to normal. For more details contact Microsoft* support.

Set the Gigabit Adapter connection setting to Auto Negotiation. This option is under the Advanced tab of the adapter’s properties, in Speed & Duplex – right-click the adapter and choose properties, click the Advanced tab, and click Speed & Duplex, and make sure it is set to Auto Negotiation. This should be the default setting.

If the issue persists, contact Intel Customer Support for assistance.

Additional information

We have had reports of some ISP technicians telling their customers that a Gigabit option will appear in this setting if the network adapter is working correctly. This is incorrect. Auto Negotiation is the correct setting for Gigabit speeds in Speed & Duplex for Intel Networking Adapters. There is no option for 1.0 Gbps Full Duplex with some Ethernet drivers. Auto Negotiation will give a 1.0 Gbps link speed, provided your other networking equipment auto-negotiates correctly.

Related Products

This article applies to 172 products.
Intel® Ethernet Controller X710 Intel® Ethernet Controller E830-XXVAM2 Intel® Ethernet Network Adapter E810-CQDA2 800 Series Network Adapters (up to 200GbE) Intel® Ethernet Network Adapter X710-DA2 for OCP 3.0 Intel® Ethernet Controller X710-BM2 500 Series Controllers (up to 10GbE) Intel® Ethernet Server Adapter I210 Series Intel® Ethernet Controller XL710-BM1 Intel® Ethernet Controller X550-AT2 Intel® Ethernet Converged Network Adapter X520-LR1 Intel® Ethernet Converged Network Adapter X520-DA2 Intel® Ethernet Controller E610 Intel® Ethernet Network Adapter XXV710-DA2 Intel® Ethernet Network Adapter X710-T4L for OCP 3.0 Intel® Ethernet Network Adapter X722 Intel® Ethernet Software Intel® Ethernet Controller X540 Intel® Ethernet Network Adapter E830-CQDA2 for OCP 3.0 Intel® Ethernet Converged Network Adapter X550-T2 Intel® 82579LM Gigabit Ethernet PHY Intel® Ethernet Converged Network Adapter X550-T1 Intel® Ethernet Converged Network Adapter X520 Series Intel® Gigabit CT Desktop Adapter Intel® Ethernet Network Adapter E830-CQDA2 Intel® Ethernet Converged Network Adapter X710 Intel® Ethernet Network Adapter E610-XT2 Ethernet Products Gigabit Ethernet Adapters (up to 2.5GbE) Intel® Ethernet Converged Network Adapter X540-T2 Intel® Gigabit EF Server Adapter Series Intel® Ethernet Network Adapter XXV710 Intel® Ethernet E810 Network Adapters (up to 100GbE) Intel® Ethernet Converged Network Adapter X540-T1 Intel® Ethernet Network Adapter E610-XT2 for OCP 3.0 Intel® Ethernet Controller I226 Series Intel® Killer™ Ethernet E3000 2.5 Gbps Intel® Ethernet Server Adapter X710-DA2 for OCP Intel® Ethernet Network Adapter E810-XXVDA2 Intel® Ethernet Server Adapter X520 Intel® Killer™ Ethernet E3100 2.5 Gbps Intel® Killer™ Ethernet Controller Intel® Ethernet Server Adapter X520-DA1 for Open Compute Project Intel® Ethernet Network Adapter XXV710-DA2 for OCP Intel® Gigabit CT Desktop Adapter Series Intel® Ethernet Network Adapter I350-T4 for OCP 3.0 Intel® Killer™ Ethernet Products Intel® Ethernet Controller XL710 Intel® Ethernet Network Adapter E610-IT4 for OCP 3.0 Intel® Ethernet Network Adapter XXV710-DA1 Intel® Ethernet E810 Controllers (up to 100GbE) Intel® Ethernet Converged Network Adapter X710-DA2 Intel® Ethernet Converged Network Adapter X520-SR1 Intel® Ethernet Server Adapter I210-T1 Intel® Killer™ Ethernet E2600 Intel® 82579V Gigabit Ethernet PHY Intel® Ethernet Server Adapter X520-DA2 for Open Compute Project Intel® Ethernet Converged Network Adapter XL710-QDA1 Intel® Ethernet Network Adapter I350 Series Intel® Ethernet Converged Network Adapter X710-T4 Intel® Ethernet Network Adapter I226 Series Intel® Ethernet Server Adapter I340 Series 800 Series Controllers (up to 200GbE) Intel® Ethernet Controller I225 Series Intel® Ethernet Network Adapter X722-DA4 Gigabit Ethernet Controllers (up to 2.5GbE) Intel® Ethernet Controller E610-IAT2 Intel® Ethernet Network Adapter E610-IT4 500 Series Network Adapters (up to 10GbE) Intel® Ethernet Network Adapter X722-DA2 Intel® Ethernet Controller E810-XXVAM2 Intel® Ethernet Controller E810-CAM1 Intel® Ethernet Connection I219 Series Intel® 82579 Gigabit Ethernet Controller Ethernet Connections (up to 25GbE) Intel® Ethernet Network Adapter E830-XXVDA2 for OCP 3.0 Intel® Ethernet Controller E830-CCAM1 Intel® Killer™ Ethernet E2500v2 Intel® Ethernet Network Adapter X710-DA4 for OCP 3.0 Intel® Ethernet Network Adapter E610 Intel® Ethernet Server Adapter X520-DA2 Intel® Ethernet Controller X540-AT2 Intel® Ethernet Converged Network Adapter X540 Intel® Ethernet Network Adapter X710-T2L Intel® Gigabit ET Server Adapter Series Intel® Ethernet Network Adapter E810-2CQDA2 Multi-host Controllers (up to100GbE) 700 Series Network Adapters (up to 25GbE) Intel® Ethernet Network Adapter E610-XT4 for OCP 3.0 Intel® Ethernet Network Adapter E610-XT4 Intel® PRO/1000 PT Server Adapter Series Intel® Ethernet Controller E610-XAT2 Intel® Ethernet Controller E810-CAM2 Intel® Ethernet Controller X550 Intel® Ethernet Server Adapter I350 Series Intel® Ethernet Controller XL710-BM2 600 Series Controllers (up to 10GbE) Intel® Ethernet Network Adapter X710 Intel® Ethernet Network Adapter X710-T2L for OCP 3.0 Intel® 82567 Gigabit Ethernet Controller Intel® Ethernet Network Adapter X710-T4L Intel® Ethernet Controller X550-BT2 Intel® Ethernet E830 Network Adapters (up to 200GbE) Intel® Ethernet Converged Network Adapter XL710-QDA2 Intel® Ethernet E830 Controllers (up to 200GbE) Intel® Ethernet Network Adapter E810-CQDA1 Intel® Ethernet Converged Network Adapter X710-DA4 Intel® PRO/1000 PT Desktop Adapter Series 700 Series Controllers (up to 40GbE) Intel® Ethernet Network Adapter E830-XXVDA8F for OCP 3.0 Intel® Ethernet Converged Network Adapter X550 600 Series Network Adapters (up to 10GbE) Intel® Ethernet Controller E610-XAT Intel® Ethernet Controller X550-AT Intel® Ethernet Network Adapter E810-XXVDA4 Intel® Ethernet Network Adapter XXV710-DA1 for OCP Intel® Ethernet Converged Network Adapter XL710

Discontinued Products

Intel® PRO/1000 PT Quad Port Low Profile Server Adapter Legacy Intel® Killer™ Ethernet Products Intel® 82578DC Gigabit Ethernet PHY Intel® Gigabit ET Quad Port Server Adapter Intel® PRO/1000 MF Server Adapter Legacy Ethernet Products Intel® 82566MC Gigabit Ethernet PHY Intel® 82566MM Gigabit Ethernet PHY Intel® Ethernet Controller XL710-AM2 Intel® 82577LC Gigabit Ethernet PHY Intel® 82578DM Gigabit Ethernet PHY Intel® PRO/1000 MT Desktop Adapter Series Intel® PRO/1000 MF Dual Port Server Adapter Intel® 82577LM Gigabit Ethernet PHY Intel® 82578 Gigabit Ethernet PHY Intel® PRO/1000 PF Dual Port Server Adapter Intel® PRO/1000 GT Desktop Adapter Intel® Gigabit VT Quad Port Server Adapter Series Intel® PRO/1000 PF Quad Port Server Adapter Intel® PRO/1000 MT Server Adapter Series Intel® Ethernet Controller X710-AM2 Intel® Ethernet Server Adapter I340-F4 Intel® Ethernet Converged Network Adapter X520-T2 Intel® Gigabit ET Dual Port Server Adapter Intel® PRO/1000 MT Quad Port Server Adapter Intel® Ethernet Server Adapter I350-F2 Intel® PRO/1000 PT Server Adapter Intel® Ethernet Controller XL710-AM1 Intel® PRO/1000 PF Server Adapter Series Intel® PRO/1000 GT Server Adapter Series Intel® Gigabit EF Dual Port Server Adapter Intel® 82566DC Gigabit Ethernet PHY Intel® 82566DM Gigabit Ethernet PHY Intel® Ethernet Server Adapter I350-T2 Intel® Gigabit ET2 Quad Port Server Adapter Intel® PRO/1000 MT Desktop Adapter Intel® Ethernet Server Adapter I340-T4 Intel® PRO/1000 PT Desktop Adapter Intel® PRO/1000 MF Server Adapter (LX) Intel® PRO/1000 PT Quad Port Server Adapter Intel® PRO/1000 PT Dual Port Server Adapter Intel® Ethernet Fabric Suite (Intel® EFS) Intel® PRO/1000 GT Desktop Adapter Series Intel® Gigabit VT Quad Port Server Adapter Intel® PRO/1000 MF Server Adapter Series Intel® Ethernet Converged Network Adapter X520-SR2 Intel® PRO/1000 MT Dual Port Server Adapter Intel® Ethernet Server Adapter I350-F4 Intel® Ethernet Server Adapter I350-T4 Intel® PRO/1000 MT Server Adapter Intel® PRO/1000 PF Server Adapter Intel® 82566 Gigabit Ethernet PHY Intel® Ethernet Converged Network Adapter X520-QDA1 Intel® PRO/1000 GT Quad Port Server Adapter Intel® 82577 Gigabit Ethernet PHY

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