In order to test whether an ad blocker is causing you to be unable to see your ad preview, open Google Ads and check for the error in at least 2 browsers as well as in a private browser window (Incognito mode in Chrome). To disable 3rd-party ad blockers, consult with the developer’s guidance.
This article describes how to check if an ad blocker is activated in your browser, and how to disable Google Chrome’s ad blocker. The error may not show consistently across all browsers or on some networks if you access Google Ads through more than one browser.
If your browser is running an ad blocker extension (for example Google Chrome’s Ad Blocker or another 3rd-party ad blocker), a red banner error message may appear at the top of your Google Ads and you may be unable to see your ad previews while using Google Ads.
