{"id":4615,"date":"2025-12-16T05:22:31","date_gmt":"2025-12-16T05:22:31","guid":{"rendered":"https:\/\/signmycode.com\/resources\/?p=4615"},"modified":"2025-12-16T05:26:18","modified_gmt":"2025-12-16T05:26:18","slug":"how-to-code-sign-a-windows-application-with-electron-builder","status":"publish","type":"post","link":"https:\/\/signmycode.com\/resources\/how-to-code-sign-a-windows-application-with-electron-builder","title":{"rendered":"How to Sign a Windows App with Electron Builder?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You\u2019ve spent weeks, maybe months, crafting your dream Electron app. The UI looks clean, the features work flawlessly, and you finally hit that Build button.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Excited, you send the installer to your friend for testing. You\u2019re expecting a \u201cWow, this is awesome!\u201d Instead, you get: <strong>Windows protected your PC. Unknown Publisher.\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That bright <a href=\"https:\/\/signmycode.com\/resources\/what-is-user-account-control\">blue SmartScreen warning<\/a> slaps your beautiful app right across the face, making it appear like malware. Your friend hesitates, clicks \u201cDon\u2019t run,\u201d and suddenly all your hard work looks sketchy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This isn\u2019t a bug. It\u2019s not even a coding issue. It\u2019s because your app isn\u2019t code-signed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Windows doesn\u2019t trust unsigned software. Period. And that\u2019s a problem for developers who want to look professional, gain user trust, and ensure smooth installations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">But don\u2019t worry, fixing this is easier than you think.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I\u2019ll walk you through the process of code signing your Electron app on Windows using Electron Builder, step by step.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Electron Builder?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The construction of your app is just half the battle. The actual headache begins as soon as you attempt to package it for users.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You want a professional look and a clean installer, and not a folder with a messy set of files that yell at you that it is a developer build.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That is precisely the place of Electron Builder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended:<\/strong> <a href=\"https:\/\/signmycode.com\/blog\/what-is-electron-software-framework-how-electron-works-pros-cons-and-use-cases\">What is Electron Software Framework? How Electron Works? Pros, Cons and Use Cases<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Imagine it as your own personal packaging assistant, someone who does all the boring, technical work, and you can create the amazing features.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Electron Builder will automatically convert your raw Electron project to an installable, cross-platform, and immediately usable <strong>.exe or .msi file on Windows<\/strong> (and even a cross-platform <strong>.dmg file on macOS<\/strong> should you ever find the need to cross-platform it).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It automatically supports code signing, which means you don\u2019t have to fight with complex Windows tools, <a href=\"https:\/\/signmycode.com\/resources\/how-to-sign-digitally-powershell-script\">PowerShell commands<\/a>, or confusing certificate settings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Just configure it once\u2026 hit build\u2026 and Electron Builder does the magic packaging, signing, and preparing your app for the world to download.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Electron Builder helps you ship your app like a pro <strong>with confidence, trust, and zero hassle.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Code Signing Matters?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You spend hours building your Electron app, you package it beautifully, upload it for download, and within minutes\u2026 your inbox is flooded with messages like: &nbsp;<strong><em>\u201cHey, Windows says your app might harm my PC. Is this safe?\u201d<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And that is the nightmare any developer has the first time he or she skips the code signature.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/signmycode.com\/blog\/what-is-a-code-signing-within-the-public-key-infrastructure-pki\">Code signing<\/a> is not merely another feature that is nice to have. Your passport to your app. And it is what Windows (and your users) tells.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cThis app is legit. It consists of a trusted developer, and it has not been altered or changed.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In its absence, a window issue that tacky <strong>\u2018<a href=\"https:\/\/signmycode.com\/resources\/unknown-publisher-warning-what-is-it-why-should-you-care\">Unknown Publisher warning<\/a><\/strong>&#8216; right in the face of your user. Your application immediately becomes suspicious. And, speaking the truth, users do not install suspicious applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>None of the code signing = immediate trust problems.<\/strong> <strong>But when you do sign your code, everything changes.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows recognises your identity.<\/li>\n\n\n\n<li>SmartScreen protection steps aside.<\/li>\n\n\n\n<li>Your users can just install your app without hesitation.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">And suddenly\u2026 You look credible. You look professional. You look like a developer who means business.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prerequisites<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We need the following requirements before commencing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An Electron application (any simple app would be enough)<\/li>\n\n\n\n<li>System (physical or virtual) Windows 10 or Windows 11.<\/li>\n\n\n\n<li>Node.js (LS version suggested)<\/li>\n\n\n\n<li>npm is available in PATH<\/li>\n\n\n\n<li>Electron Builder is available all over the world or through npx.<\/li>\n\n\n\n<li>An authentic OV or EV code signing certificate of a trusted CA.<\/li>\n\n\n\n<li>USB token or HSM middleware is installed.<\/li>\n\n\n\n<li>Internet connection (to time-stamp it) Stable.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Token-based certificates are not recommended to implement code signing on macOS or Linux builds of Windows. Use Windows.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended:<\/strong> <a href=\"https:\/\/signmycode.com\/resources\/how-to-code-signing-an-electron-js-app-for-macos\">How to Code Signing an Electron.js App for macOS?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Sign a Windows App in Electron Builder<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Purchase a Code Signing Certificate<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You know that little blue tick you see next to verified accounts on social media? It instantly tells you:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cYep, this person is real.\u201d A <a href=\"https:\/\/signmycode.com\/buy-code-signing-certificates\">code signing certificate<\/a> does the same thing, but for your app. It\u2019s your app\u2019s verified badge, your way of telling Windows (and your users). \u201cHey, this software actually came from me, not some shady imposter on the internet.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When your app is signed with one, Windows trusts it. Users trust it. And that dreaded \u201cUnknown Publisher\u201d message disappears.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now, where do you get one? You can\u2019t just generate it out of thin air (well, not a trusted one). You\u2019ll need to buy it from a Certificate Authority (CA). These are trusted organisations that verify developers and issue legitimate certificates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Note:<\/strong> The secret key is non-exportable. There will be no .pfx or .p12 file. Operation signing is carried out within secure hardware or operated HSM services.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: USB Token\/HSM Middleware Installation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The middleware provided by the CA will have to be installed in order to enable Windows to access the <a href=\"https:\/\/signmycode.com\/cheap-code-signing-certificates\">code signing certificate<\/a>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">USB Token:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Insert the USB token into the system.<\/li>\n\n\n\n<li>Install the CA middleware and driver.<\/li>\n\n\n\n<li>Restart the system when necessary.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Physical or Cloud HSM:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Install the client software given by the vendor.<\/li>\n\n\n\n<li>Enable authentication (PIN\/credential\/service account)<\/li>\n\n\n\n<li>Ensure the HSM connection is on.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Beforehand, make sure that the middleware service is running.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended:<\/strong> <a href=\"https:\/\/signmycode.com\/resources\/guide-to-install-safenet-client-software-initiate-and-reset-etoken\">Guide to Install SafeNet Client Software, Initiate and Reset eToken<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Check the Presence of the Certificate in Windows<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ensure that Windows identifies with the certificate and the key.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">GUI Verification:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Press Win + R<\/strong><\/li>\n\n\n\n<li>Enter <strong>certmgr.msc<\/strong><\/li>\n\n\n\n<li>Navigate to <strong>Personal \u2192 Certificates<\/strong><\/li>\n\n\n\n<li>Ensure that the certificate of code signing is displayed.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Command-Line Verification:<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>certutil -store My<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Confirm:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your organisation matches the certificate subject.<\/li>\n\n\n\n<li>Enhanced Key Usage has Code Signing.<\/li>\n\n\n\n<li>The status of the private key has been displayed as available.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In case the certificate is not displayed, revisit the middleware installation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: Install and Validate Electron Builder<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Install Electron Builder globally by running these commands:<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install electron-builder -g<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Or verify local usage:<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>npx electron-builder -version<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Confirm Electron Builder is executed successfully and then moves on.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5: Prepare the Electron Project for Signing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Make sure your Electron project is compiling and does not sign before switching on code signing.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Recommended checks:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>npm install is successful.<\/li>\n\n\n\n<li>Application is opened in development mode.<\/li>\n\n\n\n<li>Packaging does not make the packaging mistakes.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This is instead of simultaneous debugging and signing problems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 6: Token-Based Signing Electron Builder Configurements<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Defining the build configuration is done by opening the package.json file of your project.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Basic minimum setup:<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>{\n\"build\": {\n\"appId\": \"com.yourcompany.yourapp\",\n\"productName\": \"Your App Name\",\n\"directories\": {\n\"output\": \"dist\"\n},\n\"win\": {\n\"target\": \"nsis\",\n\"signingHashAlgorithms\": &#91;\"sha256\"]\n}\n}\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Configuration Rules:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Please do not specify certificateFile.<\/li>\n\n\n\n<li>Do not reference passwords.<\/li>\n\n\n\n<li>Do not hardcode secrets<\/li>\n\n\n\n<li>Electron Builder will automatically pick the certificate out of the Windows certificate store.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 7: Development and Signing of the Application<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">The command to be run: Windows Build, on the project root.<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>npx electron-builder --win<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">During this process:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Electron app is packed into Electron Builder.<\/li>\n\n\n\n<li>Implicitly called Windows signing APIs (signtool).<\/li>\n\n\n\n<li>The USB token or HSM implements the private key operation.<\/li>\n\n\n\n<li>A trusted time is used.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">You may be prompted for:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>USB token PIN<\/li>\n\n\n\n<li>HSM authentication credentials.<\/li>\n\n\n\n<li>Disregard, do not interrupt the signing process.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Step 8: Check Signed Installer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Check the digital signature before distribution.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Run Command:<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>signtool verify \/pa \/v dist\/YourApp Setup.exe<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Verification Confirms:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Signature validity<\/li>\n\n\n\n<li>Correct publisher identity<\/li>\n\n\n\n<li>Presence of timestamp<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Installers should not be distributed without signatures or signed partially.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common Issues and Troubleshooting<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Certificate Not Detected<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Middleware not installed<\/li>\n\n\n\n<li>Token not inserted<\/li>\n\n\n\n<li>Not in the Personal store certificate.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">No Signing Prompt Appearing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The service middleware ceased.<\/li>\n\n\n\n<li>Wrong version of the token driver.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Timestamp Errors<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CA temporary outage of timestamping.<\/li>\n\n\n\n<li>Network restrictions<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">After correcting the problem, rebuild it again.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Best Practices Production Signing<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use a dedicated machine for building.<\/li>\n\n\n\n<li>Restrict USB token access<\/li>\n\n\n\n<li>Avoid sharing token PINs<\/li>\n\n\n\n<li>Rotate before the certificates expire.<\/li>\n\n\n\n<li>Have a consistent signing identity.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Recommended:<\/strong> <a href=\"https:\/\/signmycode.com\/blog\/best-practices-for-cryptographic-key-management-to-avoid-failures\">Key Management Best Practices to Avoid Cryptographic Failures<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The current <a href=\"https:\/\/signmycode.com\/windows-code-signing\">Windows code signing<\/a> is implemented with the help of a USB token or an HSM-based certificate.<\/li>\n\n\n\n<li>The design of the system does not export the private keys.<\/li>\n\n\n\n<li>Directly signing through the Windows Certificate Store is Electron Builder.<\/li>\n\n\n\n<li>PFX-based signing is no more.<\/li>\n\n\n\n<li>Both <a href=\"https:\/\/signmycode.com\/ov-code-signing\">OV<\/a> and <a href=\"https:\/\/signmycode.com\/ev-code-signing\">EV<\/a> reputation are organic through SmartScreen.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This tutorial represents a fully working, modern workflow for signing Windows Electron applications with Electron Builder.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You\u2019ve spent weeks, maybe months, crafting your dream Electron app. The UI looks clean, the features work flawlessly, and you finally hit that Build button. Excited, you send the installer to your friend for testing. You\u2019re expecting a \u201cWow, this is awesome!\u201d Instead, you get: Windows protected your PC. Unknown Publisher.\u201d That bright blue SmartScreen&hellip; <a class=\"more-link\" href=\"https:\/\/signmycode.com\/resources\/how-to-code-sign-a-windows-application-with-electron-builder\">Read More <span class=\"screen-reader-text\">How to Sign a Windows App with Electron Builder?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":4626,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[635,634],"class_list":["post-4615","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-code-signing-tutorials","tag-electron-code-signing","tag-signing-a-windows-application-with-electron-builder","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Code Sign a Windows App in Electron Builder?<\/title>\n<meta name=\"description\" content=\"Follow the step by step tutorial to digitally sign a Windows application with Electron Builder and best practices to maintain the security.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/signmycode.com\/resources\/how-to-code-sign-a-windows-application-with-electron-builder\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Code Sign a Windows App in Electron Builder?\" \/>\n<meta property=\"og:description\" content=\"Follow the step by step tutorial to digitally sign a Windows application with Electron Builder and best practices to maintain the security.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/signmycode.com\/resources\/how-to-code-sign-a-windows-application-with-electron-builder\" \/>\n<meta property=\"og:site_name\" content=\"SignMyCode - 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