Create Application Pool in Windows1) Start Internet Information Services (IIS) Manager.
2) Under the root folder, right-click the Application Pools sub-folder, and select Add Application Pool.
3) In the Name field, enter the name of the application pool.
4) In the Managed pipeline mode, you can choose any options. In this case we can choose Classic.
5) Click OK. The application pool is created.
6) Click the Application Pools sub-folder. The application pools are displayed on the right.
7) Right-click the application pool that was created and click Advanced Settings from the menu. The Advanced Settings window opens.
Under the General group, click Enable 32-Bit Application, and select True from the list in the second column.
9) Click OK.
Done
