Azure DevOps Server 2020 RC2 now available

Gloridel Morales

Today, we released Azure DevOps Server 2020 RC2. This is our last planned prerelease before our final release of Azure DevOps Server 2020. You can upgrade from Azure DevOps Server 2020 RC2 or previous versions of TFS and Azure DevOps. You can find the full details in our release notes.

Here are some key links:

We’d love for you to install this release candidate and provide any feedback at Developer Community.


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  • Mark Malyon 0

    Is this a go-live release supported in production?

    • Gloridel MoralesMicrosoft employee 0

      Hi Mark, it is supported in production.

      • Waseem Bukhari 0

        What is the difference between R2 and production version expected in future? When you are going to launch Release? Thanks!

        • Gloridel MoralesMicrosoft employee 0

          Hi Waseem, RTW will include bug fixes and we don’t have a release date yet.

          • Naresh Kumar 0

            Any update on the release dates

          • Gloridel MoralesMicrosoft employee 0

            We plan on releasing by the end of October

      • Mark Malyon 0

        Thanks Gloridel.

  • Scott Lezberg 0

    I attempted a test upgrade from ADO 2019.1.1 and got this error during the database upgrade process (Failed (405 of 416 steps completed)

    Unexpected migration failure. ResultMessage: {“Message”:”Job failed. 0 feed/protocol migration jobs scheduled, 0 jobs not scheduled due to HostDoesNotExistException/HostShutdownException, 0 actions taken for feeds.”,”ExceptionType”:”Microsoft.VisualStudio.Services.Packaging.ServiceShared.BlobPrototype.Exceptions.JobFailedException”,”ExceptionMessage”:”$MVSSPSS.BlobPrototype.Exceptions.JobFailedException —> $MVSSPSS.BlobPrototype.RemovedAggregation+RemovedAggregationException: The implementation of the aggregation with protocol NuGet, name PackageNames, version V1, has been removed.\n at $MVSSPSS.BlobPrototype.RemovedAggregation.Bootstrap(IVssRequestContext requestContext)\n at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext()\n at System.Collections.Generic.List1..ctor(IEnumerable1 collection)\n at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)\n at $MVSSPSS.Jobs.ChangeProcessing.FeedChangeProcessingJobHandler.<>c__DisplayClass14_0.<g__ProcessOneCommitLogChange|0>d.MoveNext()\n at (async b) $MVSSPSS.Jobs.ChangeProcessing.FeedChangeProcessingJobHandler.d__14.MoveNext()\n at (async b) $MVSSPSS.Jobs.ChangeProcessing.FeedChangeProcessingJobHandler.d__14.MoveNext()\n at (async a) $MVSSPSS.Jobs.ChangeProcessing.FeedChangeProcessingJobHandler.d__13.MoveNext()\n — End of inner exception stack trace —\n at $MVSSPSS.Jobs.ChangeProcessing.FeedChangeProcessingJobHandler.d__13.MoveNext()\n at (async a) $MVSSPSS.Aggregations.MigrationEngine.FeedMigrationAndChangeProcessingInlinePerformerAsQueuer.d__4.MoveNext()\n at (async a) $MVSSPSS.Aggregations.MigrationEngine.DontDisposeFeedJobQueuer.d__3.MoveNext()\n at (async b) $MVSSPSS.BlobPrototype.MigrationKickerJobHandler.<>c__DisplayClass5_1.<g__ApplyChangesTo|4>d.MoveNext()\n at (async a) $MVSSPSS.BlobPrototype.MigrationKickerJobHandler.d__5.MoveNext()”}

    • Phil HodgsonMicrosoft employee 0

      Thank you for reporting and working with us to verify the fix. The patch has been posted to your Developer Community ticket and the fix will be included in the next release

    • Scott Lezberg 0

      Any reason this comment is “awaiting moderation”? I asked on the ADO 2020 RC1 announcement page and it was removed. Not sure why this would be a bad question to ask?

    • Dan HellemMicrosoft employee 0

      The WIT Client OM (SOAP APIs) are deprecated but not removed in Azure DevOps 2020. So they will continue to work.

  • John Bown 0

    I see that mermaid diagram support is still not available on wikis. Can you confirm when this is going to be available in Azure DevOps Server? 2020 RTW, 2021, or never… ?

    • Gloridel MoralesMicrosoft employee 0

      Hi John,

      Mermaid will not be available in Azure DevOps Server 2020. We may consider to include in future updates.

    • Gloridel MoralesMicrosoft employee 0

      Thanks for posting in the Developer Community.

    • Phil HodgsonMicrosoft employee 0

      Thank you for reporting. A patch has been posted to your Developer Community ticket and the fix will be included in the next release

  • Shahyad Sharghi 0
    • Justin ChungMicrosoft employee 0

      The preview feature regarding the Pipeline decorator is already fixed and will be in the final release. We are investigating the market place extensions install issue and the tfx command line publish issue. We are planning to resolve these issues as soon as we complete the investigation. Thank you for submitting these issues!

  • Aron Pedersen 0

    What API version will Azure DevOps Server 2020 support?

    • Justin ChungMicrosoft employee 0

      REST API version 6.0 will be supported with Azure DevOps Server 2020.

  • 0


    I can’t find the invite member or add member in the RC2. Please help.

    CP Hsiao

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