The IaaS upgrade fails and you cannot continue the upgrade.


The installer cannot update the web.config file.


This occurs when the creation date for the web.config file is the same as or later than the modified date.


  1. Before you begin the upgrade, open the web.config file in an editor from an account with elevated privileges.
  2. Save the file to change the date stamp for modification.
  3. Verify that the file modification date for the web.config file is later than the creation date.
  4. Run the IaaS upgrade.