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Troubleshooting

Common issues and how to resolve them. Can't find what you need? Contact us.

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Scanning issues

Daily scan limit reached

You see a "limit reached" message when trying to scan an IP, domain or file. This means you have used all your daily scan credits for that scan type.

Daily credits reset every 24 hours. You can also upgrade your plan for higher quotas. Creating a free account (if you're anonymous) also increases your limits.

Domain scan stuck on "In progress"

Domain scans query multiple sources in parallel and typically complete within 30 seconds. If a scan stays "in progress" for more than 2 minutes, it may have encountered an issue with a downstream provider.

Refresh the page and check your scan history. If the scan failed, try again. Some domains with complex infrastructure or high DNS record counts may take longer.

File upload fails or times out

File uploads are limited to 10 MB. If your file exceeds this limit or your connection is slow, the upload may fail silently.

Check that your file is under 10 MB. Supported formats include PE executables, documents (PDF, DOCX, XLSX, PPTX), images, DLL, SYS and EML files. If the issue persists, try a different browser or disable browser extensions.

Account & access

Can't log in or reset my password

If you're unable to log in, make sure you're using the correct email address. Password reset emails are sent immediately but may take a few minutes to arrive.

Check your spam/junk folder for the reset email. If you still can't access your account, contact support with the email address you registered with.

Two-factor authentication (2FA) issues

If your 2FA codes aren't working, make sure your device's clock is synchronized. TOTP codes are time-based and require accurate system time.

Enable automatic time sync on your device. If you've lost access to your authenticator app, contact support to regain access to your account.

API & integrations

API returns 401 Unauthorized

Your API key is missing, invalid or has been revoked. API access requires a Pro plan or above.

Verify your API key in account settings. Make sure you're including the Authorization: Bearer YOUR_KEY header. See the API guide for details.

MCP integration not connecting

If Claude or another AI assistant can't connect to mlab via MCP, the issue is usually related to OAuth configuration or network access.

Follow the setup steps in the MCP integration guide. Make sure your OAuth token is valid and that your network allows outbound connections to mlab.sh.