diff --git a/packages/command-tests/commands.js b/packages/command-tests/commands.js
index 236e5bf7..b5da6a21 100644
--- a/packages/command-tests/commands.js
+++ b/packages/command-tests/commands.js
@@ -228,6 +228,7 @@ async function main() {
             ) {
                 throw new Error("Expected mpk file to be generated, but it wasn't.");
             }
+            checkWidgetBundleFiles();
         }
 
         async function testRelease() {
@@ -244,6 +245,18 @@ async function main() {
             ) {
                 throw new Error("Expected mpk file to be generated, but it wasn't.");
             }
+            checkWidgetBundleFiles();
+        }
+
+        function checkWidgetBundleFiles() {
+            // XML files copied into the staging dir before zipping; missing here means a broken mpk.
+            const stagingDir = join(workDir, "dist", "tmp", "widgets");
+            const missing = ["package.xml", `${widgetPackageJson.widgetName}.xml`].filter(
+                f => !existsSync(join(stagingDir, f))
+            );
+            if (missing.length) {
+                throw new Error(`Expected widget bundle files in mpk, but missing: ${missing.join(", ")}.`);
+            }
         }
 
         async function checkDependenciesFiles(isNative, boilerplate, version) {
diff --git a/packages/pluggable-widgets-tools/CHANGELOG.md b/packages/pluggable-widgets-tools/CHANGELOG.md
index 91c7297b..aa700345 100644
--- a/packages/pluggable-widgets-tools/CHANGELOG.md
+++ b/packages/pluggable-widgets-tools/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Fixed
+
+-   We fixed an issue on Windows where the generated `.mpk` was missing the widget's `.xml` files and icon/tile PNGs.
+
 ### Changed
 
 -   We replaced `ts-jest` with `@swc/jest` as the Jest transform (3–5× faster for TSX-heavy test suites) and switched the test runner from `jest-jasmine2` to `jest-circus`.
diff --git a/packages/pluggable-widgets-tools/configs/rollup.config.mjs b/packages/pluggable-widgets-tools/configs/rollup.config.mjs
index 4998ce2d..b6015387 100644
--- a/packages/pluggable-widgets-tools/configs/rollup.config.mjs
+++ b/packages/pluggable-widgets-tools/configs/rollup.config.mjs
@@ -320,9 +320,10 @@ export default async args => {
             clear({ targets: [outDir, mpkDir] }),
             command([
                 () => {
-                    cp(join(sourcePath, "src/**/*.xml"), outDir);
+                    // Re-target join(widgetRoot,...) after PR #182.
+                    cp("src/**/*.xml", outDir);
                     if (existsSync(`src/${widgetName}.icon.png`) || existsSync(`src/${widgetName}.tile.png`)) {
-                        cp(join(sourcePath, `src/${widgetName}.@(tile|icon)?(.dark).png`), outDir);
+                        cp(`src/${widgetName}.@(tile|icon)?(.dark).png`, outDir);
                     }
                 }
             ]),
diff --git a/packages/pluggable-widgets-tools/configs/rollup.config.native.mjs b/packages/pluggable-widgets-tools/configs/rollup.config.native.mjs
index 72316abb..f8171edc 100644
--- a/packages/pluggable-widgets-tools/configs/rollup.config.native.mjs
+++ b/packages/pluggable-widgets-tools/configs/rollup.config.native.mjs
@@ -257,9 +257,10 @@ export default async args => {
             clear({ targets: [outDir, mpkDir] }),
             command([
                 () => {
-                    cp(join(sourcePath, "src/**/*.xml"), outDir);
+                    // Re-target join(widgetRoot,...) after PR #182.
+                    cp("src/**/*.xml", outDir);
                     if (existsSync(`src/${widgetName}.icon.png`) || existsSync(`src/${widgetName}.tile.png`)) {
-                        cp(join(sourcePath, `src/${widgetName}.@(tile|icon)?(.dark).png`), outDir);
+                        cp(`src/${widgetName}.@(tile|icon)?(.dark).png`, outDir);
                     }
                 }
             ])