My Lunarpages user name: *edited*
 
Why will the site's database can not be changed? Did you recently change the file permissions?

Why plesk platform can not modify the file permissions?

I need your help, very worried ! Thank you!

Please don't post your Plesk username in a public forum. I have edited it out.

Please explain in more detail. You should be able to modify the database using Phpmyadmin in Plesk for Mysql databases or MyLittleAdmin at Raptor - http://lesuth.lunarpages.com/mylittleadmin2/ for MSSQL databases.

For MyLittleAdmin, you can login using the following information:

1. Type in your database username and password.   
2. You must choose 'SQL Server Authentication'
3. Choose 'Options' and change the dropdown for 'Network Protocols' to 'TCP/IP'.

" Permissions of a domain's httpdocs folder can return to default on performing extensive operations such the one from domain's 'Setup' icon when Plesk domain reconfigurator runs.
If you're trying to change permissions on domain's web root directory 'httpdocs' from Plesk's File Manager, Plesk will not allow these to be changed cause its by default!
To answer your third question, if you're having MS Access database files which are modifiable from your web applications, you can set write permissions for users prefixing with names IUSR and IWP on directories where the files exist through Plesk File Manager. If these exist beneath httpdocs directly, then we can setup these permissions for you after account verification.

Thank you for contacting Lunarpages helpdesk.  "

Problem has been resolved !