LogMeIn support sites no longer support Microsoft's Internet Explorer (IE) browser. Please use a supported browser to ensure all features perform as they should (Chrome / FireFox / Edge).

The GoTo support site no longer supports Safari 15. Please upgrade your browser to Safari 16 (or newer) or switch to a supported browser such as Google Chrome, Mozilla Firefox, or Microsoft Edge.

Discover what our all-in-one IT solution can do for your business. Get GoTo Resolve free.

We are currently experiencing an unplanned outage for this product. View Service Status
  • Support
  • Products

    Explore support by product

    GoTo Connect

    All-in-one phone, meeting and messaging software

    GoTo Meeting

    Video and audio meeting software

    GoTo Webinar

    All-in-one webinar and virtual events software

    GoTo Room

    Conference room hardware

    GoTo Training

    Online training software

    OpenVoice

    Audio conferencing software

    Grasshopper

    Lightweight virtual phone system

    join.me

    Video conferencing software

    LogMeIn Resolve

    IT management & support

    LogMeIn Resolve MDM

    Mobile device management

    LogMeIn Pro

    Remote device access

    LogMeIn Central

    Remote monitoring & management

    LogMeIn Rescue

    Remote IT support

    GoToMyPC

    Remote desktop access

    GoToAssist

    Remote support software

    Hamachi

    Hosted VPN service

    RemotelyAnywhere

    On-prem remote access solution
  • Community
  • Service Status
  • Try the improved My Cases portal

    Easily manage your ticket, track its status, contact us from an existing case, and more.

    Sign in to try
  • Language selector icon Language selector icon
    • English
    • français
    • italiano
    • Deutsch
    • español
    • português
    • Nederlands
  • Contact Support
  • Service Status
  • User Avatar User Avatar
    • Support
    • Contact Support
    • Browse Products
    • Service Status
    • Community
    • Sign in
    • User Avatar
    • My Account
    • Personal Info
    • Sign In & Security
    • My Cases
    • Billing Center
    • https://link.goto.com/myaccount-billing
    • My GoTo Connect
    • My Meetings
    • My Webinars
    • My Trainings
    • My Conferences
    • My Resolutions
    • My Mobile Devices
    • My Sessions
    • My Sessions
    • My Incidents
    • Sign out
  • Troubleshoot
  • Troubleshoot Hamachi
product logo
Back button image Back
Back button image
product logo

Troubelshooting LogMeIn Hamachi network adapter connection and installation issues

You can remove the LogMeIn Hamachi driver files or manually install the LogMeIn Hamachi network adapter to resolve the issue.

When you try to install the LogMeIn Hamachi adapter, you may see the following error:

There is no hash in the specified catalog file. The file may be corrupted or tampered with.
This is because the following driver files have different modified dates, and LogMeIn Hamachi cannot install the LogMeIn Hamachi Network adapter:
  • sys file
  • inf file
  • cat file

The adapters are located in C:\Program Files (x86)\LogMeIn Hamachi\x64 (for 64-bit systems) or C:\Program Files\LogMeIn Hamachi (for 32-bit systems).

Make sure the network adapter is enabled

Make sure the network adapter is enabled in Network Connections, as follows:

  1. Press the Windows key + R.

    Result: The Run box is displayed.

  2. Type Control Panel and press Enter.

    Result: The Control Panel window is displayed.

  3. Select either Network and Sharing Center or Network and Internet > Network and Sharing Center.
  4. On the left side of the window, select Change Adapter Settings.

    Result: Network Connection options are displayed.

  5. Right-click on the Hamachi adapter and select Enable.

    Result: A dialog box saying Enabling... is displayed.

Remove the LogMeIn Hamachi driver files

Tip: Before proceeding, you need to have hidden files visible in Windows. Go to Control Panel > File Explorer Options > View to set hidden files to visible.
  1. Uninstall Hamachi.
  2. Restart your computer.
  3. Verify the .sys, .inf, and .cat files are removed from C:\Program Files (x86)\LogMeIn Hamachi\x64 (for 64-bit systems) or C:\Program Files\LogMeIn Hamachi (for 32-bit systems).
    • If they are, download and install Download LogMeIn Hamachi for Windows (MSI).
    • If they are not, manually delete the files then download and install Download LogMeIn Hamachi for Windows (MSI).

Manually install the network adapter

Important: M2 chip-based and newer Macs, and iOS devices are not supported.
You can try the following methods to repair the connection to the LogMeIn Hamachi network adapter.
  • Disable your software firewall (unless it is the Windows Firewall) reboot, and try again.
  • Open Device Manager and manually enable the driver for Hamachi Network Interface. Then start LogMeIn Hamachi and see if it can connect.
    • If it can, then something is not working properly in Device Management on your system, which might be caused by a driver (not necessarily a networking one).
    • Troubleshooting this would be done by booting in safe mode, manually starting the virtual adapter, and then running Hamachi. You can then start turning devices on, one by one, until the conflict is found.
  • Check your Network Connections folder and see if Hamachi's adapter is called Hamachi, and not something like Local Area Connection 4. If it is not named Hamachi, then rename it to LogMeIn Hamachi and try running the application again. Make sure that Network Connection LogMeIn Hamachi is activated.
  • Type services.msc, and press Enter. Then ensure the DHCP Client and Network Connections services are running.
  • You may need to check your network adapter for Winsock issues. More information on Winsock can be found here.

If none of the above helps, then there is something on your system that is overriding default access control for system drivers, in which case you need to isolate and disable this component.

In some cases, Windows fails to properly install the network adapter and there is no LogMeIn Hamachi adapter listed in the Network connections folder. In this case, you may have to manually reinstall the network adapter as follows:

  1. Go to Start > Run, and type hdwwiz.cpl. If you receive an error, or your computer runs on Windows 7 or Vista, try again with hdwwiz only.
    • If it begins searching immediately, let it finish, then choose Yes, I have already connected the hardware.
    • If it displays the currently installed devices, scroll down to the bottom.
  2. Choose Add a new hardware device. If it is not there, go to the next step.
  3. Choose Install the hardware that I manually select from a list (Advanced).
  4. Select Network adapters.
  5. Select Have Disk and then Browse.
  6. Browse to the installation folder, and select the hamdrv.inf setup information file.
  7. Select the LogMeIn Hamachi Virtual Ethernet Adapter driver.
  8. Finish the installation of the adapter.
  9. Check your Network Connections folder and see if Hamachi's adapter is called Hamachi, and not something like Local Area Connection 4. If it is not named Hamachi, then rename it to LogMeIn Hamachi and try running the application again. Make sure that Network Connection LogMeIn Hamachi is activated.
    Important: If your anti-virus software reports or blocks Hamachi-2-ui.exe, you must add an exclusion for the Hamachi-2-ui.exe program. Please consult your anti-virus software documentation for assistance with adding an exclusion to the allowed list.

Enable the DHCP client

Enable the DHCP Client and Network Connections services in services.msc.

  1. Press the Windows key + R.

    Result: The Run box is displayed.

  2. Type services.msc and press Enter.

    Result: The Services window is displayed.

  3. Locate and right-click the DHCP Client service and select Start.

    Result: The DHCP Client service is started.

  4. Locate and right-click the Network Connections service and select Start.

    Result: The Network Connections service is started.

  5. Locate and right-click the Hamachi Tunnelling Engine service and select Restart.

    Result: The LogMeIn Hamachi software should restart.

Set a static IP for the LogMeIn Hamachi adapter

This requires that LogMeIn Hamachi has been run at least once, and you have been assigned a virtual IP.
  1. Go to your Network Connections.
  2. Right-click the LogMeIn Hamachi network adapter and select Properties.
  3. Select the TCP/IP item (TCP/IP v4 on Vista).
  4. Select Properties.
  5. Use your LogMeIn Hamachi IP address and 255.0.0.0 as the Subnet Mask. You can leave the Default Gateway empty, or use 25.0.0.1.

Other resolutions

  • Ensure your personal firewall is allowing traffic for Hamachi, specifically, traffic to/from 25.0.0.1.
  • Disable the firewall on the machine experiencing the error.
  • Run WinSock to revert certain Windows networking registry values to their defaults. For details, read this Microsoft support article.

Need help?

Contact icon Contact support
Manage Cases icon Manage cases
Community icon Ask the Community
  • Language selector icon Language selector icon
    • English
    • français
    • italiano
    • Deutsch
    • español
    • português
    • Nederlands
  • About Us
  • Terms of Service
  • Privacy Policy
  • Trademark
  • Do Not Sell or Share My Personal Info
  • Browse Products
  • Copyright © 2025 GoTo Group, Inc. All rights reserved

Collaboration Products

GoTo Connect

GoTo Meeting

GoTo Webinar

GoTo Training

join.me

Grasshopper

OpenVoice

Remote Solutions Products

GoTo Resolve

Rescue

GoToAssist

Access Products

Pro

Central

GoToMyPC