April patches for Azure DevOps Server and Team Foundation Server

This post details the April 2021 patches for Azure DevOps Server and Team Foundation Server, addressing security vulnerabilities CVE-2021-27067 (Information disclosure) and CVE-2021-28459 (Spoofing vulnerability). It also resolves a bug where the 'New Test Case' button was not working in Azure DevOps Server 2019.1.1. Specific patch installation instructions are provided for Azure DevOps Server 2020.0.1 Patch 2, Azure DevOps Server 2020 (requiring an update to 2020.0.1 first), Azure DevOps Server 2019.1.1 Patch 8, Azure DevOps Server 2019.0.1 Patch 10, TFS 2018 Update 3.2 Patch 15, TFS 2018 Update 1.2 Patch 10, and TFS 2017 Update 3.1 Patch 13. The post also specifies the required AzureResourceGroupDeployment tasks for each version.