agent advanced hunting hash lookup timed out on a 90-day lookback and the campaign scope was undercounted

TL;DR

Run the hash lookup in smaller lookback windows and page the advanced hunting query, recording the coverage window in the campaign report, because a timed-out 90-day lookup returning partial results understates the campaign scope silently. Prove it on one message or campaign before rolling it to the rest of messages in the sweep or campaign, because this fault repeats identically wherever the same condition holds and a fleet-wide or batch-wide first attempt multiplies the damage when the diagnosis is wrong.

agent advanced hunting hash lookup timed out on a 90-day lookback and the campaign scope was undercounted

Use this when

• You see this exact error or symptom: agent advanced hunting hash lookup timed out on a 90-day lookback and the campaign scope was undercounted.
• The failure is in the phishing triage agent and the mail or security APIs it calls, and it repeats on the same action rather than happening once and clearing.
• Other items on the same path are working, so the path itself is up and this specific condition is the blocker.

Not for this skill when

• A different error code, message, or tool is involved. Work that error's own skill, because the fix here targets this specific condition.
• The whole service or platform is down. Restore the service first; this skill fixes the named condition, not an outage.
• You cannot identify one affected item to test on. Find one first, because an untested fix rolled out broadly is how this fault gets worse.

Steps

1. Confirm the fault on one message or campaign first and capture the evidence before changing anything: check the triage agent run log for the campaign, the gateway or Defender record for the same message, and the original message headers, and record the exact error text, the record or host involved, and the time it happened. Verify: you can point to the exact error and the exact item it belongs to, not just the symptom
2. Run the hash lookup in smaller lookback windows and page the advanced hunting query, recording the coverage window in the campaign report, because a timed-out 90-day lookup returning partial results understates the campaign scope silently. Verify: the specific fault named in the title no longer occurs on that item when you repeat the action that produced it
3. Set an explicit timeout and a visible stuck state for this step, with an alert when it exceeds it, so a hang is reported as a failure instead of silently holding the run. Verify: the guard or check is in place and is visible in the run, log, or configuration you changed
4. Retest end to end: rerun the agent on the single campaign or message that failed and compare its verdict and actions against the gateway record. Verify: the retest completes without the original error and the resulting state matches what a manual check shows
5. Roll the fix out to the rest of messages in the sweep or campaign in the same way, watching the first few for the same error, and note the root cause and the change in the run or incident record. Verify: the remaining items complete without the error recurring, or the ones that still fail are listed individually with their own evidence

Variant phrasings

agent advanced hunting hash lookup timed out on a 90-day fix

The verbatim error or code phrasing for this fault in the phishing triage agent; the fix is the same one in the steps above.

agent advanced hunting hash lookup timed out on a 90-day lookback and

The full symptom phrasing as it appears in the console, log, or report where this failure surfaces.

how to fix agent advanced hunting hash lookup timed out on a 90-day

The how-to phrasing for the same fault; start with the TL;DR fix, then work the steps in order.

Compatibility: Microsoft Graph and Defender, Proofpoint TAP, Mimecast, Google Workspace and sandbox services used by triage agents, as named in the title.

Why it happens

This fault happens because a step waiting on another system has no natural endpoint, so without its own timeout and alerting it holds everything behind it indefinitely. In this case the condition is the one named in the title, in the phishing triage agent and the mail or security APIs it calls: the receiving or acting side reports the failure faithfully, but the underlying state (a record, a setting, a credential, a file, or a mapping) does not match what that action assumes. Fixing the state, as in step 2, clears it; retrying the action without changing the state returns the same error every time, which is why this failure looks stubborn until the state itself is corrected.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstgWrJl32yZWufXJY8yTrHQ