Why does Threat Grid file upload fail with active registration?

300-710 By islever Editorial Last updated

Configure Cisco Secure Firewall Malware Defense in Secure Firewall Management Center

Short answer

B The cause is a host limit set, which blocks file submission to Cisco Threat Grid even though the last registration status is still active.

Question

A security engineer found a suspicious file from an employee email address and is trying to upload it for analysis, however the upload is failing. The last registration status is still active. What is the cause for this issue?
  1. Cisco AMP for Networks is unable to contact Cisco Threat Grid on premise.
  2. There is a host limit set. Correct Answer
  3. The user agent status is set to monitor.
  4. Cisco AMP for Networks is unable to contact Cisco Threat Grid Cloud.

Key Takeaways

This item tests whether you can distinguish a Threat Grid connectivity failure from a licensing or host-limit condition; the trap is assuming an active registration status rules out all local submission restrictions.

A suspicious file upload to Cisco Threat Grid fails despite the last registration status being active. The page explains why a configured host limit—not connectivity to Threat Grid—is the correct cause (B) in this Firepower malware-analysis scenario.

Common mistake: Many candidates pick D (Cloud connectivity loss) because an upload failure naturally suggests a network problem, but an active registration status already proves the FMC-to-Threat Grid channel is up.

Expert Analysis

Why the Answer Is Correct

The question states the "last registration status is still active," which in Cisco Secure Firewall Management Center (FMC) / Secure Malware Analytics (formerly Threat Grid) integration means the device is successfully registered and communicating with the analysis service. That rules out connectivity failures to either on-premises Threat Grid (option A) or Threat Grid Cloud (option D). The remaining likely cause is a host limit configured in the file policy or malware defense settings; when the maximum number of hosts allowed to submit files for analysis is reached, uploads fail even though the registration remains healthy. As tinyJoe noted, the product name change from Threat Grid to Secure Malware Analytics often confuses candidates, but the operational concept of a host limit is the key.

Why the Other Options Are Wrong

Options A and D both describe communication failures with Threat Grid on-prem or cloud, but an active registration status contradicts those scenarios; if the FMC could not reach Threat Grid, the status would typically show as disconnected or expired. Option C mentions user agent status set to monitor, which relates to identity policy or user agent settings, not file upload submission limits. The community comment from gwb points out that host limits are normally configured under network discovery, and that "drop host" affects discovery status rather than malware status; while the exact location may vary, the concept of a host limit (B) is the only option that explains a failed upload while registration is active. Cokamaniako's comment about rate limits also supports that submission restrictions, not connectivity, are the culprit.

Community Comment Notes

Several learners lean toward option B, including tinyJoe who wrote "The answer is probably B" and also highlighted the confusing product naming. Initial14 initially chose D but later reversed, saying "Sorry, Id go for host limit here" after considering the active registration status. donciga explicitly stated "The correct answer is B" and linked a Cisco support document about upload limit errors. whysohardwhy and THEODORABLE both note the poor wording and suggest either host limit or rate limit, but the active registration status remains the decisive clue. These comments collectively reinforce that connectivity is not the issue, making the host-limit explanation the most consistent.

Exam Strategy

Look for status indicators that rule out connectivity before selecting a network-related answer. In Cisco Secure Firewall questions, an active registration or license status usually means the service channel is healthy, so focus on local limits, licenses, or policy restrictions. If two options describe the same connectivity failure with different locations, they are often distractors.

Frequently Asked Questions

Why is a host limit the cause instead of Threat Grid cloud connectivity?

An active registration status confirms the FMC can reach Threat Grid, so the failure is a local submission restriction such as a host limit, not a network outage (option D).

What does an active last registration status mean in Threat Grid?

It means the FMC device is still successfully registered with the analysis service, ruling out on-prem or cloud connectivity failures (options A and D).

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Discussion 9 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 9

  1. Cokamaniako 👍 2 Answered B
    Rate Limits The API sample submission rate limit is global for the Threat Grid Appliance under the terms of the license agreement. This affects API submissions ONLY, not manual sample submissions. Rate limits are based on a window of rolling time, not to a calendar day. When the submission limit is exhausted, the next API submission will return a 429 error, plus a message about how long to wait before retrying. See the portal online Help for more information. I´d go with B
  2. tinyJoe 👍 2 Answered B
    The answer is probably B... What is very confusing is that Cisco always, always changes its product names so often. “Cisco Threat Grid” is now called ‘Secure Malware Analytics’. Cisco, please PLEASE DON'T use this name for your exams. https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/760/management-center-device-config -76/network-malware-protection.html?bookSearch=true#:~:text=Threat%20Grid
  3. gwb 👍 2
    My answer is D host limit is normally configured at network discovery at FMC. So if number of host reached to the maximum for discovery purpose, it will behave like below. "Drop host" means network discovery status, not malware status https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/discovery-policies.html
  4. Initial14 👍 2
    The last registration status is still active: Sory, Id go for host limit here
  5. Initial14 👍 2 Answered D
    I'd go with D
Show 4 more comments
  1. whysohardwhy 👍 1
    There's a rate limit, so the option B here looks odd. Either B or D should be right. Poorly worded quesiton, "found a suspicious file from an employee email address". Since when does an email address contain files?
  2. THEODORABLE 👍 1
    I am going to say host limit has been reached as the engineer can see that the status of the last registration is still active, would you not be able to see status if you cannot reach the service?
  3. donciga 👍 1 Answered B
    The correct answer is B. https://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/215283-understand-the-error-upload-limit-reach.html
  4. THEODORABLE 👍 1
    the service?

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