Cannot download backtest logs. API token hash error

Here’s a step-by-step troubleshooting and workaround guide for downloading backtest logs from QuantConnect when facing an API token error:

1. Clear browser cache & cookies, then retry

   • Close all QuantConnect tabs.
   • In your browser settings, find the privacy/history section and clear your browsing data (be sure to include “Cookies” and “Cached images/files”).
   • Restart the browser, log back into QuantConnect, open your project, and try downloading the logs again.

2. Rule out browser-specific issues

   • Open the same backtest in an incognito/private browsing window and attempt to download the logs.
   • If you still get the error, switch to a different browser (e.g., try Firefox if you were using Chrome, or vice versa).

3. Confirm you’re using the correct QuantConnect account

   • Check the top right corner of the site to ensure the email/username matches the account that owns your projects and backtests.
   • If not, log out and sign in with the correct account.

4. Refresh session & regenerate the API token again

   • Log out of QuantConnect.
   • Log back in, go to your profile (“API Access” section), and click “Re-generate API Token.” Copy the new token and click “Save.”
   • Log out again, close your browser, reopen it, log back in, and try downloading the logs once more.

5. Eliminate network/firewall problems

   • Try accessing QuantConnect and downloading logs from a different network (e.g., home, work, mobile hotspot).
   • Alternatively, use another device (laptop, phone) on a different network to rule out local network issues.

6. Workaround: Use the Lean CLI (QuantConnect CLI)

   • Install the Lean CLI (Python package lean).
   • Run lean login and paste your new API token when prompted.
   • Navigate to your project folder and run:

     lean cloud pull --push --pull-logs
     

     This will pull the logs and save them locally in your project’s backtest folder.
   • See the Lean CLI documentation for more details.

7. Contact QuantConnect support If none of the above steps resolve the error:

   • Open a support ticket and include:
     • Your QuantConnect username/email
     • The backtest ID and project name
     • Timestamp of your last attempt and the exact error message
     • What browsers, devices, and networks you’ve already tried
     • Confirmation that you have generated and used a new API token

Following each of these steps should help you isolate and resolve most issues that cause API token errors when trying to download QuantConnect backtest logs.

Sources: Results - QuantConnect.com, Debugging Tools - QuantConnect.com

same ！ trouble！

I'm experiencing the same issue and have tried extensive troubleshooting:

I have also attempted numerous solutions with no success:

• Switched network access points (including different VPN connections)
• Logged in from different computers
• Tried logging in with different accounts within my organization
• Switched between different browsers
• Reset API tokens for secondary accounts in my organization

None of these approaches resolved the issue.

More importantly, this backtest download problem is not limited to a single project - all projects, both old and new, are unable to download backtest logs. This appears to be a system-wide issue affecting our entire organization.

Has anyone found a working solution, or is this a known platform-wide bug that QuantConnect is addressing?

It's been like this for me the past few days too. Don't know if this applies to most of us tho.

Just wanted to follow up and confirm that the download error has been fixed! The API token hash validation issue that was preventing file downloads from the research results page appears to have been resolved on the platform side after approximately 30 hours. Thanks to the QuantConnect team for the quick fix, and thanks to everyone who offered suggestions. For anyone else who encountered this error (code 10002), it seems to have been a temporary platform issue rather than a user configuration problem. Appreciate the support from this community! 🙏