I installed wordpress in July, before writing content I decide to change the permalink to /%category%/%postname%.html after writing about 20 content in mid-August, I registered my website to Google Webmaster.
A few days ago when logged into google, I get notification if all posts on my website linking to 404 Not found pages. For examples:
mysite.com/1st-category/my1stpost.html linking to --> mysite.com/1st-category/134564748480000 mysite.com/2nd-category/my2ndpost.html linking to --> mysite.com/2nd-category/134560846340000 mysite.com/3rd-category/my3rdpost.html linking to --> mysite.com/3rd-category/134526384920000
and so on, and now I found 89 not found (404) pages ...
I dont know where "/1345.....0000" pages come from, is this wordpress permalink issue ?