diff --git a/src/ConfigContext.ts b/src/ConfigContext.ts
index cdf4377f5..d37d880de 100644
--- a/src/ConfigContext.ts
+++ b/src/ConfigContext.ts
@@ -34,6 +34,7 @@ let configContext: Readonly<ConfigContext> = {
   allowedParentFrameOrigins: [
     `^https:\\/\\/cosmos\\.azure\\.(com|cn|us)$`,
     `^https:\\/\\/[\\.\\w]*portal\\.azure\\.(com|cn|us)$`,
+    `^https:\\/\\/[\\.\\w]*portal\\.microsoftazure.de$`,
     `^https:\\/\\/[\\.\\w]*ext\\.azure\\.(com|cn|us)$`,
     `^https:\\/\\/[\\.\\w]*\\.ext\\.microsoftazure\\.de$`,
     `^https://cosmos-db-dataexplorer-germanycentral.azurewebsites.de$`
diff --git a/src/Utils/MessageValidation.test.ts b/src/Utils/MessageValidation.test.ts
index 650986d53..78f404c4c 100644
--- a/src/Utils/MessageValidation.test.ts
+++ b/src/Utils/MessageValidation.test.ts
@@ -8,6 +8,7 @@ test.each`
   ${"https://portal.azure.com"}                                    | ${false}
   ${"https://portal.azure.us"}                                     | ${false}
   ${"https://portal.azure.cn"}                                     | ${false}
+  ${"https://portal.microsoftazure.de"}                            | ${false}
   ${"https://subdomain.portal.azure.com"}                          | ${false}
   ${"https://subdomain.portal.azure.us"}                           | ${false}
   ${"https://subdomain.portal.azure.cn"}                           | ${false}