Merge pull request #8039 from ghogen/msb8066

new page draft for msb8066

Author: v-shils

docs/msbuild/errors/msb8066.md

@@ -0,0 +1,23 @@
+---
+title: "MSB8066: Custom build for 'item-list' exited with code 'error'"
+description: "This error occurs when a custom build specified for a list of items exited with a non-zero error code."
+ms.date: "04/21/2021"
+ms.topic: "error-reference"
+f1_keywords:
+ - MSB8066
+dev_langs:
+  - "C++"
+author: ghogen
+ms.author: ghogen
+manager: jmartens
+ms.workload:
+  - "multiple"
+---
+# MSB8066:  Custom build for 'item-list' exited with code 'error code'
+
+This error occurs when a custom build specified for a list of items exited with a non-zero error code.
+
+To investigate the error, check the build output or build log to see if the custom build step produced an error with information about the problem. If not, try running it separately to check for any problems or unexpected behavior.
+
+See [Understanding custom build steps and build events](/cpp/build/understanding-custom-build-steps-and-build-events)
+

docs/msbuild/toc.yml

@@ -498,6 +498,8 @@
         href: errors/msb8040.md
       - name: MSB8041
         href: errors/msb8041.md
+      - name: MSB8066
+        href: errors/msb8066.md
   - name: Use MSBuild programmatically
     items:
     - name: Overview