So if you have a word­press blog and you decided to put it into a dif­fer­ent folder. For exam­ple domainname.com/blog. You will notice when you change the perma­link struc­ture that all your posts will cre­ate a 404 error.

One solu­tion on how to fix this is to open the .htac­cess file.
change the line in your .htaccess

Rewrite­Base /

to

Rewrite­Base /blog/

and also change

/index.php

to

index.php

(remove the slash) as it’s not in the root directory.

that should fix it, as it did for us. Enjoy!

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