Ignore That Last Google Webmaster Tools Notification: Googlebot CAN Access Your Site In the past twenty-four hours, it seems as if Google sent out a message to thousands, maybe hundreds of thousands, of site owners, that there is a problem with their site. Typically, you never ever want to ignore a webmaster tools notification but in this case, the messages were sent in error. Google told these webmasters that "Googlebot can't access your site", that the site had connection failures and Google was unable to access your site. Here is a sample message one of my clients received (although I received several): Google's Matt Cutts wrote in the thread that this seems like an error on Google's side. He said: John Mueller of Google is asking webmasters to post example URLs so they can fix the issue. The thing is, I checked this morning and webmaster tool's console does not show the error on these sites still, so maybe it was a Google error. Forum discussion at Google Webmaster Help. Sources : https://productforums.google.com/forum/#!topic/webmasters/mY75bBb3c3c/discussion http://www.seroundtable.com/google-webmaster-tools-googlebot-cant-access-16704.html
Few don't have them but many do have these notifications . Like in the following this ticket has been raised by some of customer who faced exactly same notifications :
Can you imagine how many pages containing Adsense/AdWords ads theoretically could get produced online because of such mysterious glitches? Makes me wonder sometimes...