Please check the following:
- Open IIS Manager
- Check whether Prolaborate Application pool is running. If no, please start it
- Click on the Prolaborate Application pool. Under Actions on the right-hand side panel, click on Advanced settings
- Under General, check whether Enable 32-Bit Applications is set as True.
- Under Process Model, check whether Identity is set as ApplicationPoolIdentity
- Click on the Prolaborate site. Under Actions on the right-hand side panel, click on Basic settings and check the Physical path. It should be the path of WebApplication folder. For example, C:\Program Files (x86)\Prolaborate\WebApplication
- All permissions are set for IUSR and IIS_IUSRS users for the Prolaborate folder (typically located at C:\Program Files (x86)).
- All the tables are created in Prolaborate database. If no, run Prolaborate database schema (Install schema) from the Release Notes page based on the database server used for Prolaborate.