To uninstall BizTalk Server 2000, simply click Remove within Control Panel | Add/Remove Programs.This uninstallation does not require input and removes almost everything that it installed. However, it will leave some remnants. For example, the installation uses the XML parser version 3.0; after the uninstall, this parser remains. In addition to OS upgrades that are within the system directory, it also leaves some files in its installation directory and miscellaneous Registry keys.These "leftovers" are documented here for your convenience. After doing several installations and uninstallations while using the Sysdiff tool to trace down what is left over, we have found that literally thousands of lines in the Registry remained, all referring to the components that are added to the system root or \program files\common files directories. If you want to attempt to remove BizTalk Server 2000 from a system, leave most of those lines alone; only a small number of items specific to BizTalk Server will need to be manually cleaned off.
These are the items you need to remove manually:
1. Delete the Directory: C:\Program Files\Microsoft BizTalk Server. Here are the leftover files in this hierarchy:
■ BTF1 Envelope.xml
■ Simple SOAP Envelope.xml
2. Drop all the BizTalk Server SQL databases and delete the associated database files: C:\Program Files\Microsoft SQL Server\MSSQL\Data.
3. Delete the BizTalk-specific Registry keys:
■ HKLM\SOFTWARE\Microsoft\BizTalk Server
Make sure you reboot the system after performing the uninstallation, as any components that are in use will not be removed until the next reboot. Proceeding with a new installation without restarting could corrupt your new install the next time you reboot.
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