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Home › Forums › Archives › Instant Messaging › Windows Live Messenger Support › MSN / WLM Archive › How to fix “1603” HERE!
The Anti-Virus “Bit Defender” is also causing installation error 1603. Uninstall it.
ahh, i had that, maybe it was stored in the MSN messenger directory and when i deleted the folder it deleted that program too, therefore preventing any further problem… good advice Seb_Lz
Please refer to the NEW sticky topic : Error Code 1601/1603 Solutions for all other available suggestions.