Installing GIAnalyzer

Last updated 10 November 2026

What you need

  • Windows. GIAnalyzer does not run on a Mac. On a Mac you can use it in Excel on a Windows virtual machine.
  • Microsoft Excel for Windows, the desktop version installed on the computer. Both 32-bit and 64-bit Excel work. Excel on the web and Excel on phones and tablets cannot run it.
  • Microsoft components: .NET Framework 4.8 and the Visual Studio Tools for Office runtime, which the online installer adds if they are missing, and the Visual C++ runtime, which the Repair Tool installs (see If GIAnalyzer doesn't load).
  • For Position Mapper and Confirmation Mapper: 64-bit Windows. GIAnalyzer's functions run on 32-bit and 64-bit Windows.

Online or offline

The Downloads page has two versions.

  • Online version (setup.exe). Installs from our website and checks for a new version each time Excel starts. We recommend it when the computer can reach the internet.
  • Offline version (GIAnalyzer_offline.zip). Installs from files on your computer. Use it when the computer has no internet connection, or your organisation's rules don't allow online installation. It does not update itself: see Updating GIAnalyzer.

Installing missing Microsoft components may need administrator rights. If your organisation blocks software installation, ask your IT support.

For IT administrators. GIAnalyzer is a VSTO add-in (a COM add-in) for Excel. It installs for one Windows user at a time, so repeat the installation for each user on each computer. The licence key is kept in the registry, under HKEY_CURRENT_USER\Software\GIAnalyzer\GIAnalyzer. The settings of Position Mapper and Confirmation Mapper are kept in %APPDATA%\GIAnalyzer\Addons\appsettings.json, and a saved mailbox password in Windows Credential Manager.

Install the online version

  1. Save your work and close Excel.
  2. On the Downloads page, click Online version and save setup.exe.
  3. Open setup.exe from your browser's downloads. If Windows asks whether to run it, click Run.
  4. If the installer lists Microsoft components to install first, accept.
  5. When the GIAnalyzer installation window opens, click Install. Installation takes less than a minute.
  6. A message confirms that GIAnalyzer was installed. Close it.
  7. Open Excel. The GIAnalyzer tab is on the ribbon.

Excel with the GIAnalyzer tab selected

Next: activate your licence.

Install the offline version

  1. Save your work and close Excel.
  2. On the Downloads page, click Offline version and save GIAnalyzer_offline.zip to a new folder on a local disk, not a network drive.
  3. Extract all the files from the zip file.
  4. In the extracted files, open setup.exe.
  5. Click Install, and wait for the message that GIAnalyzer was installed.
  6. Open Excel. The GIAnalyzer tab is on the ribbon.

If the GIAnalyzer tab doesn't appear

Excel sometimes turns add-ins off. To turn GIAnalyzer back on:

  1. In Excel, open File > Options > Add-ins.
  2. At the bottom, under Manage, choose COM Add-ins and click Go.
  3. Tick Gamma Impact Add-In for Microsoft Excel and click OK.

If it isn't in that list, go back to Manage, choose Disabled Items and click Go. If GIAnalyzer is listed there, select it, click Enable, and restart Excel.

If GIAnalyzer doesn't load

If the tab still doesn't appear, the installation fails, or the functions show #NAME?, run the Repair Tool, with Excel closed. It may ask for administrator rights. In three steps, it:

  1. installs the Visual C++ runtime and the Visual Studio Tools for Office runtime;
  2. clears what Excel remembers about earlier versions and about add-ins it turned off, and installs the certificate that lets Windows trust GIAnalyzer;
  3. installs, repairs or uninstalls GIAnalyzer, then offers to open Excel.

Download it, and see the installation error messages and their fixes, on Troubleshooting errors. Other problems are on Troubleshooting.