Error relinking Project Site to Project in Project Server 2010

If you are trying to relink a Project Site with its Project through the option “Edit site address” and you are receiving this error message below:

The first thing that you need to verify is the “web.config” file for your PWA application (e.g.: c:\inetpub\wwwroot\VirtualDirectories\epm.domain.local80\), where the default “globalization fileEncoding” TAG is set up for “UTF-8“.

In my scenario we had changed this TAG to “<globalization fileEncoding=”iso-8859-1″ requestEncoding=”iso-8859-1″ responseEncoding=”iso-8859-1″ />” by our developer to test other options. This kind of configuration prevents the PWA application to read URLs with special characters like “http://epm.domain.loca/PWA/Ações requeridas” (PT-BR).

To solve this problem, just swap to the default/Correct TAG:

<globalization fileEncoding=”utf-8″ />

If you don’t have this scenario, you could try to consult this link: http://pwmather.wordpress.com/2011/07/20/error-relinking-project-site-to-project-in-projectserver-2010-ps2010-project-epm/