Connection Error - Existing Connection Closed by Remote Host

Hello Anki Support Team,

I am writing to seek assistance with an issue I am encountering in the Anki software. Whenever I try to perform an upload operation to the server, I receive the following error message:

Error details: error sending request for url 0: connection error: An existing connection was forcibly closed by the remote host. (os error 10054)

I have checked my network connection and confirmed that my internet is stable. I have also ensured that the necessary ports are open and not blocked by any firewalls or security software. Additionally, I have updated the Anki software to the latest version available.

Despite these troubleshooting steps, I continue to experience the same error. Could you please provide guidance on how to resolve this issue? I would greatly appreciate any assistance you can offer.

Thank you for your attention to this matter. I look forward to your prompt response.

Farinaz Akhlaghipoor

10054 is usually caused by software on your machine blocking Anki. I’d recommend you double-check any antivirus/firewall/VPN/etc software running on your machine, experimentally turning them off to see if it helps.

Thank you for your response and the suggested steps to resolve the issue. I appreciate your guidance regarding error code 10054.

I want to inform you that I have thoroughly followed your instructions and double-checked all the antivirus, firewall, and VPN software running on my machine. I have experimentally turned them off, one by one, to see if it would resolve the problem. Unfortunately, despite these efforts, I am still encountering the same error.

To provide you with more information, I am using the Anki software on a Windows 11 laptop. I have also tried connecting to different network environments, including mobile hotspots with various SIM cards, but the error persists consistently.

Considering the steps I have taken and the ongoing issue, I kindly request further assistance in resolving this matter. Please let me know if there are any additional troubleshooting steps I can try or if there are any specific logs or diagnostic information I can provide to help identify the underlying cause.

Thank you for your continued support and attention to this issue. I look forward to your further guidance and resolution.

If you’ve ruled out your machine as the problem, the most likely other explanation is that it’s some sort of filtering that your network provider is doing. If you have access to alternative wifi networks, you could try syncing on them to see if it makes a difference. If you’re unable to resolve the issue, I’m afraid you may need to resort to manually transferring your collection between devices (Collection Transfer - AnkiMobile Manual).

Thank you Damien

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