Skip to main content

How to Fix cobby Installation Problems

This guide helps you resolve common issues that occur during cobby add-in installation on Windows.

Problem​

You receive an error message during cobby installation, preventing the add-in from being installed properly.

Installation error message

Prerequisites​

  • Microsoft Windows operating system
  • Microsoft Excel 2007 or later
  • Administrator access to install Windows updates

Solution​

Step 1: Install Windows and Office Updates​

The cobby installer requires the latest Windows and Office files to run successfully.

  1. Open your Control Panel.
  2. Click on System and Security.
  3. Select Windows Update.
  4. Install all pending updates.
  5. Restart your computer if required.
  6. Open Excel and check for Office updates (File > Account > Update Options).
  7. Install any pending Office updates.
  8. Try running the cobby installer again.

Step 2: Install Security Certificate (If Step 1 Fails)​

If the installation still fails after updating, install the cobby security certificate manually.

  1. Right-click on the cobby installation file.

  2. Select Properties.

  3. Go to the Digital Signatures tab.

  4. Select the entry "mash2 GmbH & Co. KG".

  5. Click Details.

    Digital signatures tab

  6. In the "Digital signature details" window, click View certificate.

  7. In the "Certificate" window, click Install Certificate.

  8. Follow the Certificate Import Wizard.

  9. When asked for the certificate store, select Place all certificates in the following store.

  10. Click Browse and select Trusted Publishers.

  11. Click OK, then Next, then Finish.

  12. Try running the cobby installer again.

Troubleshooting​

Installation still fails after following all steps​

  • Verify you have administrator rights on your computer.
  • Check if antivirus software is blocking the installation (temporarily disable and retry).
  • Ensure you downloaded the installer from the official cobby website.
  • Contact cobby support at info@cobby.io with the exact error message.

Error message mentions missing files​

  • Run Windows Update again and ensure all updates are installed.
  • Restart your computer and try the installation immediately after startup.
  • Check that your Excel installation is not corrupted (repair Office through Control Panel if needed).