This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice This article is not considered official documentation for K2 software and is provided “as is” with no warranties.

Issue

K2 Workflow API - Swagger UI is not working and you cannot access API Calls (Operations, ServerEvent, Task and etc.)

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Example of a working K2 Workflow API:

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Symptoms

It was discovered the 'X-UA-Compatible' value to IE=EmulateIE7 is incorrect:

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Resolution

To resolve this issue, change the header 'X-UA-Compatible' value to IE=EmulateIE11 in IIS Manager. 

Please note: An IISRESET is required.