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    Nintex Knowledge Base

    401 and 500 Code Errors Calling Web Service

    Status: Validated

    ISSUE
    When attempting to call an out-of-the-box Nintex web service, the call fails with 401 or 500 code errors.
    ERROR CODE
    RESOLUTION
    1. Log into IIS.
    2. Click on App pools.
    3. Start the SharePoint webservice app pool.
    ADDITIONAL INFORMATION
    The SharePoint webservice app pool tends to not come back online after performing an IIS reset or server reboot. 
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