currently i was working on a client website and when when ever i try to open wp-Admin page its displaying an authentication box.After discussing the current situation with hosting provider they replied that
we have put an extra layer of protection on all pages of this website
But when i requested to remove this protection their reply was
The permission of .htaccess file is set to 0755. I have changed the permission to 0644 and added the code to .htaccess file. After saving the file and loading wp-admin page the file permission was automatically changed back to 0755 and the code was removed from the .htaccess file.
Their 2nd reply was
The issue is that we are not allowed to edit the .htaccess file. It seems like the file mvf.php is not allowing to edit the .htaccess file. Please inform your developer to edit the said file and add the code in to .htaccess file to remove the authentication dialogue box.
BUt and when i added the above mention code soon after refreshing the page the authentication again automatically applied so when i discussed this situation with hosting provider
their reply was.
file mvf.php is changing the behavior of your .htaccess file. If this file was not uploaded by your developer it could be uploaded by someone else and could be a malicious file. If you are unaware of this file please follow the steps below to remove the malicious contents from the server. Make sure that you remove any unwanted/unknown file/folder from the host and download all the files to your local machine and scan them for any malware and upload a clean copy of your website.
Now i do not know what to do because issue still not resolved and my client blaming on me because of this issue.
I,M in Trouble and Need serious Guideline from top level word press developers in this regards thank you very much