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TFS 2015 Vnext build gives you the option for running Visual studio build which will ideally have these options


1) Get Source 

This action is Hidden but as you can understand TFS will download source files from TFS based on your settings on Repository for Mappings to Source. There are chances that it will complain about files already exist

Warning C:\Agent\_Work\4\s\Tests\project.xml - Unable to perform the get operation because the file already exists locally

Warning C:\Agent\_Work\4\s\Tests\project - Gateway - .xml - Unable to perform the get operation because the file already exists locally

One or more errors occurred while performing a get operation for workspace ws_4_9;Build\5a940eb8-a66f-4dc3-a742-ad23cee5dc01

The quick Solution is always clean the workspace before starting the new build.


2) Nuget Restore 

If you are using Nuget restore in your build and if you have some Local repository for your Nuget , TFS nuget Restore will fail for any Local Nuget package download

2016-10-12T05:30:08.1016689Z Set workingFolder to default: C:\Agent\tasks\NuGetInstaller\0.1.18

2016-10-12T05:30:08.1173069Z Executing the powershell script: C:\Agent\tasks\NuGetInstaller\0.1.18\NuGetInstaller.ps1

2016-10-12T05:30:08.4766837Z C:\Agent\agent\worker\tools\NuGet.exe restore "C:\Agent\_Work\4\s\Services.sln" -NoCache -NonInteractive

2016-10-12T05:30:08.8204175Z MSBuild auto-detection: using msbuild version '14.0' from 'C:\Program Files (x86)\MSBuild\14.0\bin'.

2016-10-12T05:30:22.4923248Z ##[error]Unable to find version '2.0.5939.19993' of package 'FOO.Logging'.

2016-10-12T05:30:22.5860716Z ##[error]Unexpected exit code 1 returned from tool NuGet.exe

To avoid this issue when we setup the Build Agent we should be running it with our domain account which has access to this Nuget Repository and not with default Account NT Authority\Network Service

3) Copy and Publish Build Artefacts

This action fails with "TF14044: Access Denied: User Project Collection Build Service needs the Admin Workspaces global permission(s).".

To Avoid this issue we need to install TFS 2015 Update 3

4) TFS 2015 Build Clean up

TFS 2015 Build clean-up is daily bases and not on count. I am not fan of this logic because we have 4-5 Projects running simultaneously and continuous build will occupy lots of space. Plus, I like to retain some baseline release builds for longer period.

So I have created quick PowerShell script for clean-up and scheduled it as Command line in TFS build.

I am using 2 for keeping latest 2 builds and delete anything older than that. You can retain more number of builds by increasing that number.

"Get-ChildItem '\\dev-exe-002\drop\* ' -Directory | Sort-Object CreationTime -Descending | Select-Object -Skip 2 | Remove-Item -Recurse -Force"

Add Command line in your build step and provide parameter like


Posted on Wednesday, October 19, 2016 10:34 AM team foundation server , tfs build , TFS build 2015 , TFS build Vnext | Back to top

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