diff --git a/build/rule-generator/questions.js b/build/rule-generator/questions.js
index dc5e665d0c..28f9a511f0 100644
--- a/build/rule-generator/questions.js
+++ b/build/rule-generator/questions.js
@@ -33,7 +33,10 @@ const validateGetRuleName = async input => {
     throw new Error(`RULE name conflicts with an existing rule's filename.`);
   }
   // 3) ensure no rule id overlaps
-  const ruleSpecs = await glob(`${directories.rules}/**/*.json`);
+  const ruleSpecs = await glob(`${directories.rules}/**/*.json`, {
+    posix: true,
+    absolute: true
+  });
   const axeRulesIds = ruleSpecs.reduce((out, specPath) => {
     const spec = require(specPath);
     out.push(spec.id);
@@ -62,7 +65,10 @@ const validateGetCheckName = async input => {
     );
   }
   // 2) ensure no check filename overlaps
-  const checkSpecs = await glob(`${directories.checks}/**/*.json`);
+  const checkSpecs = await glob(`${directories.checks}/**/*.json`, {
+    posix: true,
+    absolute: true
+  });
   // cannot use `fs.existsSync` here, as we do not know which category of checks to look under
   const axeChecksFileNames = checkSpecs.map(
     f => f.replace('.json', '').split('/').reverse()[0]
@@ -71,7 +77,10 @@ const validateGetCheckName = async input => {
     throw new Error('CHECK name conflicts with an existing filename.');
   }
   // 3) ensure no check id overlaps
-  const ruleSpecs = await glob(`${directories.rules}/**/*.json`);
+  const ruleSpecs = await glob(`${directories.rules}/**/*.json`, {
+    posix: true,
+    absolute: true
+  });
   const axe = require(directories.axePath);
   const axeChecksIds = ruleSpecs.reduce((out, specPath) => {
     const spec = require(specPath);
diff --git a/build/tasks/metadata-function-map.js b/build/tasks/metadata-function-map.js
index e2e9d6054c..36b5836703 100644
--- a/build/tasks/metadata-function-map.js
+++ b/build/tasks/metadata-function-map.js
@@ -22,7 +22,7 @@ module.exports = function (grunt) {
           '// This file is automatically generated using build/tasks/metadata-function-map.js\n';
 
         src.forEach(globPath => {
-          glob.sync(globPath).forEach(filePath => {
+          glob.sync(globPath, { posix: true }).forEach(filePath => {
             const relativePath = path.relative(
               path.dirname(file.dest),
               filePath
diff --git a/test/aria-practices/apg.spec.js b/test/aria-practices/apg.spec.js
index f7da832530..fd1c630ee7 100644
--- a/test/aria-practices/apg.spec.js
+++ b/test/aria-practices/apg.spec.js
@@ -9,7 +9,8 @@ describe('aria-practices', function () {
   // Use path.resolve rather than require.resolve because APG package.json main file does not exist
   const apgPath = path.resolve(__dirname, '../../node_modules/aria-practices/');
   const filePaths = globSync(
-    `${apgPath}/content/patterns/*/**/examples/*.html`
+    `${apgPath}/content/patterns/*/**/examples/*.html`,
+    { posix: true }
   );
   const testFiles = filePaths.map(
     fileName => fileName.split('/aria-practices/content/patterns/')[1]