A big news for all Adwords users that you can use continues the Logged out version of Ad Preview & Diagnosis tool.Starting in October 2015, you’ll need to remain signed in to your AdWords account in order to use the Ad Preview and Diagnosis tool. This change will improve your experience with the tool by giving you more accurate and useful results.
A tool in your account that helps identify why your ad might not be appearing. The tool also shows a preview of a Google search result page for a specific term. This helps you see which ads are appearing for your keyword.
• Use this tool to check the status of your ad for a particular keyword. Once you enter a search term and other criteria like language and location, the tool will tell you whether your ad is eligible to appear in that situation.
• If you want to see how your ad appears in search results, it’s better to use this tool than to do a search on Google. You’ll see the exact same results as a Google search but you won’t harm your performance by accumulating ad impressions every time you look for your ad.
• To use the Ad Preview and Diagnosis tool, click the tool under the “Tools and Analysis” menu at the top of your AdWords account,
But In Oct month had not happen any such types of changes and finally now you can see the massage on Logged out version of the Ad Preview & Diagnosis tool: