You cannot mix architectures on the same machine. If your computer runs a 32-bit version of Microsoft Office (such as Excel or Word), you cannot install the 64-bit version of SharePoint Designer 2010, and vice versa. Modern OS Compatibility
How to Get Microsoft SharePoint Designer 2010 64-Bit Safely (and Free)
Despite these capabilities, SPD 2010 had limitations and eventual obsolescence. It was tightly coupled to the SharePoint 2010 model and relied heavily on server-side constructs that evolved in later SharePoint versions and the broader move toward client-side development. Microsoft gradually shifted focus to other tooling and paradigms—such as SharePoint Designer’s replacement functionalities in SharePoint Online, the SharePoint Framework (SPFx) for modern client-side customizations, Power Automate for cloud workflows, and modern site theming tools. As a result, SPD’s role diminished; Microsoft stopped developing it further, and modern SharePoint administrators and developers typically use newer approaches better suited to cloud-hosted, client-centric environments. microsoft+sharepoint+designer+2010+64bit+portable
Before installing, you must match the architecture of your existing Microsoft Office installation:
Replaces custom SharePoint forms and views with a low-code, web-based design studio. You cannot mix architectures on the same machine
Using cracked or repackaged enterprise software violates Microsoft’s End User License Agreement (EULA) and can jeopardize compliance audits for businesses.
Attempting to mix architectures on the same operating system will cause installation failures. Official Installation Steps Navigate to the official Microsoft Download Center. Search for . It was tightly coupled to the SharePoint 2010
files and .NET Framework, which makes true portability difficult.
The application often requires the .NET Framework 3.5 or specific Office components to be present on the host system to run.
Conclusion: Microsoft SharePoint Designer 2010 was an influential, user-focused design and workflow tool for SharePoint 2010 that offered powerful customization without heavy development. However, it was never officially offered as a portable application, and using unofficial portable builds is risky and unsupported. For ongoing needs, installing the official version in controlled environments or migrating to modern Microsoft tooling is recommended.
Are you connecting to an or SharePoint Online ?