Yesterday I managed to take down my development web server. I changed one of my customer's web sites from an SQL database to Microsoft Access, and as I am running 64 bit Windows Server 2008 and there is no 64-bit OleDB driver for Access, I had to change the Advanced Settings in the site's application pool to enable 32-bit applications: Unfortunately, I then started getting Service Unavailable Errors: HTTP Error 503. The service is unavailable on all the sites on my development box. Cha
Continue here: 503 "service unavailable" errors when IIS running in 32-bit mode on 64-bit Windows Server 2008
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