cannot read configuration file it exceeds maximum size
Common (keys read by many parts of IIS) 1. HKLM\SOFTWARE\Microsoft\InetStp\Configuration\MaxWebConfigFileSizeInKB (REG_DWORD) Nativerd.dll uses the value of this registry key to determine the maximum allowed size (in KB) of web.config files. Configuration system will produce error âCannot read configuration file because it exceeds the maximum file sizeâ if it encounters a web.config larger than this size. Configuration system assumes a default value of 250 (100 in Vista RTM). Changing the value of this key will require a process restart.