diff --git a/.github/workflows/check-test.yaml b/.github/workflows/check-test.yaml
index 6a479fa9..efdc5ead 100644
--- a/.github/workflows/check-test.yaml
+++ b/.github/workflows/check-test.yaml
@@ -90,6 +90,12 @@ jobs:
           git checkout -- packages/saslprep/src/code-points-data.ts
         shell: bash
 
+      - name: Configure Electron sandbox
+        if: ${{ runner.os == 'Linux' }}
+        run: |
+          sudo chown root:root node_modules/electron/dist/chrome-sandbox
+          sudo chmod 4755 node_modules/electron/dist/chrome-sandbox
+
       - name: Info
         run: |
           LERNA_VERSION=$(npm ls lerna --json | jq -r .dependencies.lerna.version)
diff --git a/packages/devtools-proxy-support/package.json b/packages/devtools-proxy-support/package.json
index bb5280fc..d1a23d36 100644
--- a/packages/devtools-proxy-support/package.json
+++ b/packages/devtools-proxy-support/package.json
@@ -58,7 +58,7 @@
     "check": "npm run typecheck && npm run lint && npm run depcheck",
     "check-ci": "npm run check",
     "test": "mocha",
-    "test-cov": "nyc -x \"**/*.spec.*\" --reporter=lcov --reporter=text --reporter=html npm run test",
+    "test-cov": "nyc --use-spawn-wrap -x \"**/*.spec.*\" --reporter=lcov --reporter=text --reporter=html npm run test",
     "test-watch": "npm run test -- --watch",
     "test-ci": "npm run test-cov",
     "reformat": "npm run prettier -- --write ."
diff --git a/packages/devtools-proxy-support/src/proxy-options.spec.ts b/packages/devtools-proxy-support/src/proxy-options.spec.ts
index 98e8d05f..c5edebe7 100644
--- a/packages/devtools-proxy-support/src/proxy-options.spec.ts
+++ b/packages/devtools-proxy-support/src/proxy-options.spec.ts
@@ -172,14 +172,6 @@ describe('proxy options handling', function () {
       let setup: HTTPServerProxyTestSetup;
 
       before(async function () {
-        // TODO: COMPASS-9232 reenable the test on Linux and, ideally, on Windows, after
-        // investigating the failures.
-        if (
-          (process.platform === 'win32' || process.platform === 'linux') &&
-          process.env.CI
-        ) {
-          return this.skip();
-        }
         setup = new HTTPServerProxyTestSetup();
         await setup.listen();
 
@@ -190,9 +182,13 @@ describe('proxy options handling', function () {
         await once(server, 'listening');
         const connEvent = once(server, 'connection');
         childProcess = spawn(
-          'npx',
+          // Resolving the xvfb-maybe script and running it with the current
+          // Node binary rather than going through `npx`, because on Windows
+          // spawning `npx` (really `npx.cmd`) fails with ENOENT unless a shell
+          // is used.
+          process.execPath,
           [
-            'xvfb-maybe',
+            require.resolve('xvfb-maybe/src/xvfb-maybe.js'),
             // eslint-disable-next-line @typescript-eslint/no-var-requires
             require('electron') as unknown as string,
             path.resolve(__dirname, '..', 'test', 'electron-test-server.js'),