Typically, these patches include a tfs2015.4.xpatch.exe . Run this on your Application Tier.
TFS 2015 Update 4 has been a stable "long-tail" version for many enterprises. However, older software is a prime target for vulnerabilities. Microsoft has released several patches—often referred to in documentation as or Update 4.2 —specifically to fix:
Make sure you have the credentials for the TFS service accounts, as the Upgrade Wizard will likely need to be run after the file installation. How to Install Extract: Unzip the contents of TFS-Update_4a-pc.zip . TFS-Update_4a-pc.zip
Before you unzip TFS-Update_4a-pc.zip and run the installer, ensure you have completed these steps:
Check the official Microsoft DevOps Blog for the latest patch notes and security advisories. Team Foundation Server 2015 Update 4 Release Notes Typically, these patches include a tfs2015
If you are already patching Update 4, you are in a great position to perform a direct upgrade to the latest Azure DevOps Server.
Check your Microsoft.TeamFoundation.Framework.Server.dll version in the Application Tier\Web Services\bin folder to confirm your current patch level. However, older software is a prime target for
Security First: Managing the TFS 2015 Update 4 Patch (TFS-Update_4a-pc.zip)