This is not the right place for it, but check to see if you have a
.htacces file and if so rename it so that its off. Especially if this
is local.
this will prevent any errors from blocking your access, then once you've
figured it out you can redo it properly.
Bear
On 9/13/2015 18:52, Tunde John Ojerinde wrote:

When I try to access the administrator portal, I get a 404 not found
error. I've tried to get help from different forums, but none is
forthcoming.

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#7877.

Closing as this is not the place for support questions. Please use http://forum.joomla.org/.