# ProcessRuntime.asmx 500 Internal Server Error
**URL:** https://discuss.workflowgen.com/t/processruntime-asmx-500-internal-server-error/1243
**Category:** Web API
**Created:** [December 7, 2018, 8:57pm UTC](https://discuss.workflowgen.com/t/processruntime-asmx-500-internal-server-error/1243 "2018-12-07T20:57:21Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jason.smith](https://discuss.workflowgen.com/u/jason.smith)
#### Post date: [December 7, 2018, 8:57pm UTC](https://discuss.workflowgen.com/t/processruntime-asmx-500-internal-server-error/1243/1 "2018-12-07T20:57:21Z")
When attempting to access/create a service reference I receive a 500 internal server error. I am following this tutorial:
### Invoking a WorkflowGen API using .NET code
Before invoking a WorkflowGen API using .NET code, first verify that you have access to the APIs by doing the following:
1. Open a new web browser.
2. Connect to your web service with your WorkflowGen URL: `http://yourserver:port/wfgen/ws/ProcessesRuntime.asmx` .
3. Authenticate with your WorkflowGen account.
4. The above URL will provide you with a list of available web service APIs.
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### Author:  [@jason.smith](https://discuss.workflowgen.com/u/jason.smith)
#### Post date: [December 10, 2018, 2:35pm UTC](https://discuss.workflowgen.com/t/processruntime-asmx-500-internal-server-error/1243/2 "2018-12-10T14:35:36Z")
We were able to track down the issue by running the service locally on the server to get a more details error message - had to do with a web config entry. Problem resolved.