actually I hosted my site on paraller plesk and it does not use apache instead they use IIS so there is no use of .htaccess file instead we need a web.config file on the root here is my web.config and its working for all of my projects hosted on parallel plesk
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<httpErrors errorMode="Detailed" />
<asp scriptErrorSentToBrowser="true"/>
<rewrite>
<rules>
<rule name="RuleRemoveIndex" stopProcessing="true">
<match url="^(.*)$" ignoreCase="false" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
</conditions>
<action type="Rewrite" url="index.php/{R:1}" appendQueryString="true"/>
</rule>
</rules>
</rewrite>
</system.webServer>
<system.web>
<customErrors mode="Off"/>
<compilation debug="true"/>
</system.web>
</configuration>