Encontré la solucion en el foro de MSDN, la cual cito a continuacion:
I found the answer!
I was having the exact same issue, and I was search for a solution and I happened across the following thread: http://social.msdn.microsoft.com/Forums/en-US/f4b0fd38-f4f9-41ea-bd8d-834203a175d2/building-visual-studio-2010-project-triggers-please-wait-while-windows-configures-visual-studio?forum=vssetup&prof=required
Scroll a small bit down, and there is a post by Barry Wang explaining that you need to use event viewer to find out what is missing. Anyway, I opened event viewer, then open VS 6, then hit refresh in the event viewer (under Windows Logs -> Application) and saw a warning message from MsiInstaller. It gave me the following message:
Detection of product '{9C593464-7F2F-37B3-89F8-7E894E3B09EA}', feature 'Visual_Studio_Professional_x86_enu', component '{E3FF99AA-78B9-4A06-8A74-869E9F65E1FE}' failed. The resource 'C:\WINDOWS\Microsoft.NET\Framework\URTInstallPath_GAC\' does not exist.
I opened an elevated command prompt, I navigated to the C:\WINDOWS\Microsoft.NET\Framework folder and verified that 'URTInstallPath_GAC' didn't exist, and then I did "md URTInstallPath_GAC".
Closed and reopened VS 6, and it instantly opened - no "Please wait" message.
Now this may or may not be the same problem you are having (problem is - I have had it happen on two separate computers now with VS 6 and VS 2013 installed), but it should point you in the right direction. In fact, you should be able to use the Event Viewer for anytime the "Please wait" message shows up for any application, and then once there find out what is really missing.
El link al tema es
esteEn "Criollo" y para ese problema en general (puede variar, en tal caso, comentar el problema), escribir en una consola (con permisos de administrador):
md C:\Windows\Microsoft.NET\Framework\URTInstallPath_GAC
(donde C:\ es donde instalaron windows).
Saludos!
