Step 1: Install Gpg4win (Including Kleopatra)

1. Download Gpg4win:
   • Navigate to the Gpg4win website: https://gpg4win.org/download.html.
   • Click on the latest version of Gpg4win to download the installer.
2. Install Gpg4win:
   • Open the downloaded installer file (gpg4win-x.x.x.exe).
   • Follow the installation prompts. Make sure to include Kleopatra in the installation.

Step 2: Download Electrum and Its Signature File

1. Download Electrum:
   • Go to the official Electrum website: https://electrum.org/#download.
   • Click on the Windows installer (electrum-x.x.x-setup.exe) to download it.
2. Download Signature File:
   • Right below or next to the download link for the installer, you'll find a link to the signature file (electrum-x.x.x-setup.exe.asc). Click it to download the signature file. Make sure both files are saved in the same directory.

Step 3: Import Electrum's Signing Key

1. Launch Kleopatra:
   • Open Kleopatra from your Start Menu.
2. Import Electrum's Signing Key:
   • Electrum's public signing key needs to be imported into Kleopatra for verification. You can usually find instructions or the key itself on the Electrum website's download section.
   • In Kleopatra, go to "File" > "Import Certificates" and navigate to the downloaded key file or paste the copied key text if directed to do so from the website.

Step 4: Verify the Signature

1. Open Kleopatra:
   • Ensure it's already running or open it via the Start Menu.
2. Verify the Signature:
   • In File Explorer, navigate to the directory where the Electrum installer and the signature file are located.
   • Right-click the signature file (electrum-x.x.x-setup.exe.asc) and select "More GpgEX options" > "Verify".
   • Kleopatra will check the signature against the file. If everything matches, a verification result window will confirm the signature's validity.

Step 5: Interpret Verification Results

• Successful Verification: A message indicating that the signature is valid confirms the Electrum installer is genuine and has not been altered. You can proceed with the installation.
• Failed Verification: If the verification fails, do not proceed. Ensure you've downloaded the correct signing key and files from official sources. If problems persist, seek assistance or download the files again.

Step 6: Install Electrum

• After successful verification, double-click the Electrum installer (electrum-x.x.x-setup.exe) and follow the installation instructions to install Electrum on your Windows system.