How to Fix: Connecting with SMBCLIENT to Windows 7 produces error: "protocol negotiation failed: ERRDOS:ERRnomem"
SMB/CIFS connectivity issue on Linux with Windows 7 Ultimate PCs.
📋 Table of Contents
Connecting to SMBCLIENT on Windows 7 can be frustrating when encountering the error 'protocol negotiation failed: ERRDOS:ERRnomem'. This issue affects users who are trying to access fileshares from a Windows 7 machine, but it's not limited to just Linux machines. The problem arises because of a known Windows 7 issue that requires a registry change. In this guide, we will explore the possible causes and solutions for this error.
It's particularly frustrating when users who have successfully set up file sharing on their devices are told they don't have enough memory to share files. However, in this case, it seems like there might be another issue at play. We'll do our best to help you troubleshoot the problem without having to mess with your housemate's computers.
💡 Why You Are Getting This Error
- The primary cause of this error is a known Windows 7 issue that requires a registry change. This issue occurs when there is a mismatch between the version of the SMB protocol used by the Windows machine and the client machine (in this case, your Linux machines). The registry change can resolve this issue, but it may not be feasible for your housemates to make this change due to concerns about potential system instability or compatibility issues. Another possible cause could be a configuration issue with Samba on your Linux machines, but the provided error message suggests that this is unlikely to be the case.
- Alternatively, there might be a driver issue or a problem with the network settings that's causing the connection to fail. However, since you've confirmed that you're running the latest drivers and have checked your network settings, it's likely that this isn't the cause of the problem.
✅ Best Solutions to Fix It
Registry Change on Windows 7
- Step 1: Open the Registry Editor on your housemate's Windows 7 machine. To do this, press the Windows key + R to open the Run dialog box, type 'regedit' and press Enter.
- Step 2: Navigate to the following registry key: HKEY_LOCAL_MACHINE\System/config. Look for the DWORD value called 'SMB1Enable'. If it exists, right-click on it and delete it. Then, create a new DWORD value with the same name and set its value to 0.
- Step 3: Restart your housemate's Windows 7 machine after making these changes. This should resolve the issue with SMB protocol negotiation.
Alternative Fix: Update Samba on Linux Machines
- Step 1: Update Samba on your Linux machines to the latest version. As you're already running a rolling release distribution, this might not be necessary, but it's worth checking to ensure you have the most up-to-date package.
- Step 2: Check if there are any newer versions of Samba available for your specific distribution. If so, update to the latest version using the package manager (e.g., 'sudo pacman -S samba' on Arch Linux).
🎯 Final Words
In this guide, we've explored possible causes and solutions for the error 'protocol negotiation failed: ERRDOS:ERRnomem' when connecting to SMBCLIENT on Windows 7. The primary fix involves making a registry change on your housemate's Windows machine, which should resolve the issue with SMB protocol negotiation. However, if you're unable to make this change or prefer not to, updating Samba on your Linux machines to the latest version can also help resolve the problem.
❓ Frequently Asked Questions
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