Google Crawl errors - 404's

[nts123]

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Howdy

I've been making some fairly major changes to my main site, and now have a load of 404's as I've removed/moved content around.

Can someone please tell me when these will go away? I assume it will be next time Google indexes my site, but as I've have recently resubmitted my sitemap, I though this would have happened within a couple of days.

Also I can see a number of 404's for new content which google should have no problems accesing.

Finally, will this be affecting my google ranking?

[Paul_MN]

Yes it can affect your ranking, at least temporarily anyway.

Best thing to do is setup 301 redirects from the old pages to the new ones. That will ensure people do not get 404 errors and will help google find your pages and reindex them all quickly.

[nts123]

Thanks Paul, will get 301'ing

[a4uDarian]

From recent experience, 301'ing took about 7-14 days to fully change all the old URL listings to the new ones (that was for an entire domain change though, not restructure).