New User access denied in sharepoint 2010

Windows Small Business Server 2011

I have a domain user who can:
Logon to a computer
Access email
Be added to SharePoint sites and receive the welcome email from those sites

Cannot logon to any of those site - Access Denied

This user's email account was kept open after they left the firm They have now returned, been given a new password and can do all the above except access SharePoint.

As they have not started any meaningful work yet
I deleted the account and checked they had gone from Exchange, AD and removed from all SharePoint sites (before deletion)

A 'new' user account was then created using Windows Small Business Server 2011 Standard Console, as I do for ALL users.

Again they can Logon to a network computer
Access email using their credentials
They have been added to all the SharePoint sites again, choosing their name through the Grant Permission Form and have received the welcome email

They still cannot logon to any SharePoint site either by typing the address in the browser or by clicking the link in the email sent from SharePoint.

What am I missing here?
I have created and deleted many user accounts over he years but never had this problem
Neil RandallAsked:
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Walter CurtisSharePoint AEDCommented:
Did you recreate the user with the same user name that they had before? (Seems like it.)

You mention that you removed the user from all SharePoint sites before you recreated the account.  The user name is still in the content database in a table named user info. The entry needs to be removed from there also. The easiest way to do that is to go to the top level site collection, site actions --> site settings --> people and groups

In the url you will see this at the end of the url --- /people.aspx?MembershipGroupId=5

Change the url to be /people.aspx?MembershipGroupId=0 and you will see all users. Remove the user from here. This will also remove the associated old SID. Add the user new, and probably new to the sites (test that before you do a lot of work), and then have the user try again.

Hope that helps...

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Neil RandallAuthor Commented:
Thanks Walter

That fixed the problem.

It's really easy when you know how!

The solution is now filed away in my library.

Walter CurtisSharePoint AEDCommented:
Glad that helped! Thanks...
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