TF80070 when retrieving work items from tfs RRS feed

  • Question

  • Hello,

    we connect from Project 2013 and 2016 to Team Foundation Server 2013 via TFS work item queries. Since a few days when we create new TFS WI query based project plans or refresh existing ones we get the error "TF80070: Team Foundation encountered an error whlie performing the operation. It is recommended that you save your work and restart the application."

    After some research I found a way to enable the MS Project log via winproj.exe.config. The log gives some more information:

    Exception Message: Could not cast or convert from System.String to Microsoft.VisualStudio.Services.Identity.IdentityDescriptor. (type ArgumentException)
    Exception Stack Trace:    bei Newtonsoft.Json.Utilities.ConvertUtils.EnsureTypeAssignable(Object value, Type initialType, Type targetType)   bei Newtonsoft.Json.Utilities.ConvertUtils.ConvertOrCast(Object initialValue, CultureInfo culture, Type targetType)   bei Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType) }}
    WINPROJ.EXE Error: 0 : [Error, PID 6640, TID 9112, 2017/01/11 13:45:05.813, 72213 ms, General] TF80070: Team Foundation encountered an error while performing the operation. It is recommended that you save your work and restart the application.

    The error depends neither on a specific query nor on a project version or machine or user. Sometimes a project plan can be refreshed and then a few minutes later not. And the next day - it may work again.

    Can anybody help, please?

    F. Faster

    Wednesday, January 11, 2017 2:01 PM