If you are installing Vault Server 2013 on a machine that previously had Vault 2011 or 2012 installed, you may receive the following error during the installation of Vault Server 2013:
"Error 29001. Vault management error: Could not load file or assembly 'IFilterWrapper' or one of its dependencies. An attempt was made to load a program with an incorrect format."
To correct this, please make the following changes inside of Internet Information Services (IIS). This should be done prior to installation to avoid the error.
1. Launch the IIS Manager from Control Panel -> Administrative Tools.
3. Right click the application pool identified, and choose View Applications.
4. Select the applications listed, right click and choose Change Application Pool.
7. Run the installer again
Alternatively, if you wish to re-use the existing application pool, or manually created one, the application pool will need the following settings to host Vault: