Microsoft Visual Studio 2010 Tools For Office Runtime -x64- -

Cause: You installed the x86 VSTO runtime but Office is 64-bit.
Solution: Uninstall the x86 runtime and install the x64 version.

The x64 VSTO Runtime requires:

If you are deploying a VSTO add-in via ClickOnce, you can include the VSTO runtime as a prerequisite in your setup project.

You are most likely to encounter this runtime when:

$userVsto = "$env:USERPROFILE\AppData\Local\Apps\2.0" if (Test-Path $userVsto) Write-Host "User VSTO add-ins folder: $userVsto" else Write-Host "No user-installed ClickOnce VSTO add-ins found." microsoft visual studio 2010 tools for office runtime -x64-

Description

Why it helps

Key capabilities

  • Automatic detection of Office bitness and version, choosing correct subset of components.
  • Integrity checks (digital signature + checksum) and fail-safe rollback if install fails.
  • Quiet/silent operation flags for scripting (e.g., /quiet /norestart).
  • Clear, minimal logging to %LOCALAPPDATA% for per-user installs and to Event Viewer for system installs.
  • Smart storage: reuses existing global runtime files when present, otherwise extracts only needed components.
  • Small runtime footprint by compressing non-essential debugging artifacts out of the per-user package.

    • Backward-compatibility and security

    Developer benefits

    Basic command-line examples

    If you want, I can draft a short proposal or mockup UI text and command-line help for this feature.

    [Invoking RelatedSearchTerms for further refinement] Cause: You installed the x86 VSTO runtime but

    Here’s a useful feature you can prepare for the Microsoft Visual Studio 2010 Tools for Office Runtime (x64) — especially useful when deploying Office add-ins or maintaining legacy solutions.

    For an x64 VSTO add-in to function, the target machine requires:

    A frequent cause of mysterious add-in failures is a hybrid environment:

    Run an x64 Office application (e.g., Excel 64-bit). Then open Event Viewer → Windows Logs → Application. Filter for source VSTO 4.0 . Successful loading produces an informational event: If you are deploying a VSTO add-in via

    "The managed add-in [YourAddIn] was loaded successfully into the host process EXCEL.EXE (64-bit)."