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I've tried the new beta msn, it didn't work, so I've uninstalled it from Programs and Features in Control Panel. Uninstallation completed successfully and I tried to install 8.5 and other earlier versions of MSN, but all failed with message, something like: &quot;You already have newer version of MSN installed...&quot; Question is: How can I say to earlier versions of MSN that I do not have a newer version installed, what files and what keys in registry to delete?.
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I've tried the new beta msn, it didn't work, so I've uninstalled it from Programs and Features in Control Panel. Uninstallation completed successfully and I tried to install 8.5 and other earlier versions of MSN, but all failed with message, something like: "You already have newer version of MSN installed..." Question is: How can I say to earlier versions of MSN that I do not have a newer version installed, what files and what keys in registry to delete?.

How to really uninstall MSN Beta from vista?

Windows Vista is an operating system created by Microsoft as the successor to Windows XP. It was intended for PCs, workstations and laptops, and shares the same code base as its successor, Windows 7. New features included an updated graphical user interface (GUI) and visual style dubbed Aero, a new search component called Windows Search, redesigned networking, audio, print and display subsystems, and new multimedia tools. Vista aimed to increase the level of communication between machines on a home network, using peer-to-peer technology to simplify sharing files and media between computers and devices. Windows Vista included version 3.0 of the .NET Framework, allowing software developers to write applications without traditional Windows APIs.

Windows Vista

Instant messaging (IM) is a type of online chat that offers real-time text transmission over the Internet. A LAN messenger operates in a similar way over a local area network. More advanced instant messaging can add file transfer, clickable hyperlinks, Voice over IP, or video chat. Non-IM types of chat include multicast transmission, usually referred to as "chat rooms". Depending on the IM protocol, the technical architecture can be peer-to-peer (direct point-to-point transmission) or client-server (a central server retransmits messages from the sender to the communication device).