Access denied for user 'my_username'@'localhost' (using password: YES)

The error message is clear though.

i not understand

It means that the MySQL username/password/host/databasename in the config.php do not match the details on your MySQL server.

Just to add, you need to have created a user with full permissions to your vBulletin database. You can do this in cPanel, providing you have it.

i check in config.php

username and password and databasename OK


even, for now site me runing

but, every day moment create backup automatic = db error

And how do you create this backup?

In WHM---->Backup---->Configure Backup

Backup Status=Enabled

daily , weekly , monthly

???

So to get this correct:

- your board works fine.
- Every day when the WHM/cPanel backup is running, the entire board does not function at all and only give the above error?
- Once the backup is complete, the board will function normal again.

Correct?

Not work

after, end create backup automatic

for start again ---i login to Cpanel ----->MySQL? Databases

That's it. !!!!!!!!


after this work, site again Back !!!!!!

I suggest you contact your host about this issue.