Dependency Requirements: The host computer must still have the necessary .NET Framework versions installed. A portable app can carry its own files, but it often cannot "carry" the core Windows system drivers it needs to run.

The Myth and Reality of Visual Studio 2015 Portable Visual Studio 2015 remains a highly sought-after integrated development environment (IDE) for legacy projects, C++ development, and lightweight Windows application building. Because the official installer requires gigabytes of disk space and a lengthy installation process, many developers frequently search for a "Visual Studio 2015 Portable" version.

or guide on creating your own portable instance.

Modified IDEs are prime targets for injecting malware, keyloggers, and ransomware. Because developers often run their IDEs with administrative privileges to debug applications, a compromised version of Visual Studio can grant malicious scripts total control over your operating system. Stability and Compilation Failures