When scheduling large events (50+ meetings with rooms) users may experience a problem where the browser does not allow them to continue through the scheduling process. This may be due to HTTP Request Filtering or Limiting, and/or the Maximum Allowed Content in IIS blocking the repeated requests that are required for large event scheduling.
Request Filtering and Limiting are additional security features that can be added to the IIS Role in The Server Management Console. These features are not required or recommended for Astra Schedule to function properly. However, if they are installed, the following additional configuration is recommended.
NOTE: For IIS 7.0 users: Some of the steps in this section may require that you install the Microsoft Administration Pack for IIS 7.0, which includes a user interface for request filtering. To install the Microsoft Administration Pack for IIS 7.0, please see the following URL: http://www.iis.net/download/AdministrationPack
NOTE: These configuration settings are a recommended starting point for events with 50 or more meetings. You may need to experiment with higher values if you still encounter problems, or if you need to be able to schedule events with significantly larger numbers of meetings (i.e. 200 or 300 meetings).
In IIS choose the server itself and then double click "Request Filtering".
Click the "Edit Feature Settings" for Request Filtering.
Change the "Maximum Query String" length from the default of 2048 Bytes to 4096 Bytes.
Additionally, the "Maximum Allowed Content" should be increased. (For example by adding a zero to the end of the list of zeros) This change can also be implemented by making a registry edit.