Change the system date to the correct date.After conversion, you should be able to uninstall Microsoft Money 2004.Open the Microsoft Money file which doesn't convert (Money 99 and earlier).Download the file (see the trials page or click here for the trial version (it is around 20MB)).Microsoft re-released the US 2004 trial version of Microsoft Money as a free download to allow people to convert their files. In addition, it is possible to use a trial version. The article referenced above provides some workarounds. This is usually caused by some security enhancements (see Article 227 for some further details). When trying to upgrade a Microsoft Money 99 or earlier file in Money 2006, it might fail with the message - 'The file you are attempting to open is read only or not a valid Money file'.