"The specified account <> is invalid" error when you try to install the BizTalk Server Accelerator for HL7

Important In most situations, we do not recommend that you uninstall security updates. In this situation, we are providing this information because your only option to resolve or work around this problem is to uninstall the security updates. After you successfully install the Accelerator for HL7, we strongly recommend that you reinstall all security updates to protect your computer from vulnerabilities and malicious software. 

BizTalk Server 2013

An MSI fix is available to help you install the Accelerator for HL7 on a computer on which security update 2871997 and post-2871997 updates are already installed. 

Note During the installation, you may have to point the installer to the accelerator setup files within the BizTalk folder.

You can download the MSI fix here.

Workaround

To work around this problem in BizTalk Server 2013, follow these steps:

1. Uninstall security update 2871997 and all post-2871997 security updates.
2. Restart the server.
3. Install and configure the Accelerator for HL7.
4. Reinstall the security updates that you uninstalled.

BizTalk Server 2010 and BizTalk Server 2009

For BizTalk Server 2010 and BizTalk Server 2009, there is no updated HL7 installation .msi file. Because the list of security updates continues to grow, we recommended that you follow these steps:

1. Start with a clean operating system. To do this, uninstall all security updates, and make sure that the computer meets the BizTalk Server software requirements.
2. Install and configure BizTalk Server.
3. Install and configure the Accelerator for HL7.
4. Reinstall all "important" security updates and any "optional" updates that you want for the operating system, BizTalk Server, and the HL7 accelerator.

After you install the BizTalk Server Accelerator for HL7, any new security updates that you install will not affect the HL7 run-time.

If you are trying to install the Accelerator for HL7 on a computer that has security updates already installed, we recommend that you follow these steps:

1. Uninstall the security updates. You can create a wusa.exe /uninstall script to uninstall the updates. For a script example, see the comments in this MSDN blog article.
   
   Note You must update the script to include your specific installed updates.
   
2. Restart the server.
3. Install and configure the Accelerator for HL7.
4. Reinstall all "important" security updates and any "optional" updates that you want for the operating system, BizTalk Server, and the HL7 accelerator.