The Ad Preview and Diagnosis tool inside Google Ads is loading a reCAPTCHA box that cannot be dismissed, so advertisers cannot preview their ads. Search Engine Roundtable reported it on 4 August 2026, picking up a sighting posted on X by advertiser Govind Singh Panwar, who said it had run for about a week. This is a bug sighting, not an announced incident: Google has not acknowledged it, and there is no statement, no scope and no fix timeline.
What Search Engine Roundtable reported
Barry Schwartz wrote at Search Engine Roundtable on 4 August 2026 that the tool "is broken. It loads a CAPTCHA box and doesn't let you remove the CAPTCHA from being displayed. So you cannot use the tool to preview your Google Ads." In his description it normally "helps you understand why your ad or ad asset might not be appearing" and shows a preview of how it renders on a Google search results page.
Schwartz credited the sighting to Govind Singh Panwar, who posted on X that he "tried multiple devices and different internet connections, but I keep getting the reCAPTCHA 'unusual traffic' page," and added: "It's been more than a week."
Google has not acknowledged the problem
No Google statement appears in the 4 August 2026 report, which Schwartz published with a screenshot of the blocked state. He wrote that "It is not clear when this will be resolved."
The scope is unestablished too. The report does not say whether the reCAPTCHA appears for every account or a subset, which countries or account types are involved, or whether this is rate limiting rather than a failure of the tool. Claims about how widespread it is go beyond the reporting.
What is known and what is not
It is worth separating what the report establishes from what it leaves open.
| Detail | As reported on 4 August 2026 |
|---|---|
| Does the tool load? | Yes, but with a CAPTCHA box that cannot be removed, so the preview is unusable |
| How long has it been happening? | More than a week, per the advertiser who raised it on X |
| Devices and connections tried | Multiple devices and different connections, same reCAPTCHA "unusual traffic" page each time |
| Google statement | None in the report; Google has not acknowledged it |
| Fix timeline | None; the report says it is not clear when this will be resolved |
Fallback checks inside the Google Ads interface
No workaround has been published by Search Engine Roundtable or Google, so what follows is reasoning about which existing views cover the same ground, not something the source said.
Start with the status columns, because most of what Ad Preview and Diagnosis surfaces is assembled from information already in the account. The keyword status column shows whether a keyword is eligible or held back, and it inherits from the ad group and campaign above it. A paused ad group is the most common reason an ad does not appear for a query, and that is one glance.
Then open the policy view and ad strength at ad level. Disapprovals and limited-eligibility states are listed against individual ads and assets with the reason attached, and a disapproved ad was never going to show in a preview anyway. Ad strength will not tell you whether an ad served, but a thin asset set is often the real answer behind "why can't I see my ad".
Campaign diagnostics covers the account-wide blockers that stop delivery: billing failures, exhausted budgets, conversion tracking that has stopped receiving data, campaign-level policy flags. When several campaigns go quiet the same day, the cause is usually here, not in any single ad.
Finally, prefer delivery evidence over previews. If a keyword accrued impressions in the last few hours, ads are serving whatever the preview tool is doing. Reading those columns alongside your analytics measurement setup usually confirms serving without opening a browser tab.
Why searching manually is the costly workaround
Ad Preview and Diagnosis exists because it shows the ad without accruing an impression. Searching Google yourself does the opposite. This is reasoning, not something the report states.
Every manual check logs an impression that will never be clicked. Click-through rate is diluted, impression share starts describing auctions that included your own staff, and the data feeding automated bidding takes in a stream of guaranteed non-converting exposure. On a low-volume campaign, a few people checking a few terms daily can move those metrics enough to matter, thinly enough that nobody notices.
If someone has to search manually, keep it rare and note the dates so the reporting can be read in context. Tell clients plainly that a broken preview tool is not a delivery problem.
What this means for Thai marketers
The report does not address Thailand and gives no geographic scope, so nothing indicates Thai accounts are affected more or less than any others. For Thai advertisers the practical read is about reporting process rather than platform risk.
Where preview screenshots are a fixture of client decks, status columns and impression share data are a more defensible substitute than a staff member searching from a Bangkok IP and screenshotting the result. Teams running Google Ads campaigns for several clients should also resist escalating: a tool that will not load is not evidence that ads stopped serving.
Questions advertisers are asking
Is Ad Preview and Diagnosis broken for everyone?
The source does not state it. The 4 August 2026 report rests on one advertiser's account plus its own screenshot, and gives no figure for how many accounts or which regions are affected.
Has Google confirmed the issue?
No. There is no Google statement in the report and no acknowledgement it points to. Anyone saying Google is aware and working on it is adding something the reporting does not contain.
Does this mean my ads have stopped showing?
No. Ad Preview and Diagnosis is a diagnostic view, not part of ad serving, so a CAPTCHA blocking it says nothing about delivery. Check impressions and keyword status instead.
Is this affecting accounts in Thailand?
The source does not say. The report carries no regional detail, so there is no basis for stating Thai accounts are or are not included. Seeing the same page is a data point, not a pattern.
When will it be fixed?
Unknown. The report states that it is not clear when this will be resolved, and no timeline has been published.
The full write-up is at Search Engine Roundtable. If one broken diagnostic has exposed how much of your reporting leans on a single tool, an audit of your reporting setup is a reasonable next step.
