Logon dream background Prompts the user name does not exist the solution

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The author of a Web site, the previous day is normal, but today, when you log in the background, prompted the "user name does not exist." Try it several times and make sure that the "username does not exist" is still being prompted without any input errors. This really let me frightened, because I 77 fan network has been built more than 1.5, thanks to the search engine up, there is a certain amount of traffic. Spent more than a year on the site.

After the problem, the first time is to search the relevant tutorials on the Internet, and solution. But each scheme is invalid, fortunately my website is the default database three days a backup. After consulting the host provider, the host database is backed up and restored. Then you can use the original user name landing up.

The problem has not ended, the restored database is three days ago, after the date of the article has been lost to 30 articles a day to calculate, about the loss of nearly 100 article. If again, it is not possible to each article URL or the original one, will give search engine caused a lot of dead chain or repeated articles. So I started a plan to restore the username on the original database.

The first step: Open the Database Dede_admin table, the following interface appears:

Explanation: 1 means login account, 2 means login password (encrypted character, not the password you entered)

Step two: Copy the account number and password from the previously logged in database to the text document for backup.

Step three: Open the database that can not log in, and find dede_admin, open look. Copy the account number and password in the second step to the corresponding column.

Then open the dream background address, has been able to log into the dream backstage.

At this point, although the user name and password are valid, but we have to reflect on why this situation? Today, we have modified, will not be a period of time has been modified? So I went to the next step of the work.

Through 360 website Guardian Detection, found that the site has "dedecms Latest SQL Injection Vulnerability", this vulnerability can be injected through the SQL user name and password changes. Workaround, download the vulnerability patch for updates.

This login to the dream background prompts the user name does not exist to solve the problem, I hope to give a friend have reference meaning. This article by 77 Fan Network (www.fw77.com) webmaster Original, respect for copyright, I hope the reprint retain links.