diff --git a/src/formatters/vsoFormatter.ts b/src/formatters/vsoFormatter.ts
index f9ab02aca2e..0df7a88aef8 100644
--- a/src/formatters/vsoFormatter.ts
+++ b/src/formatters/vsoFormatter.ts
@@ -38,13 +38,14 @@ export class Formatter extends AbstractFormatter {
         const outputLines = failures.map((failure: RuleFailure) => {
             const fileName = failure.getFileName();
             const failureString = failure.getFailure();
+            const failureSeverity = failure.getRuleSeverity();
             const lineAndCharacter = failure.getStartPosition().getLineAndCharacter();
             const line = lineAndCharacter.line + 1;
             const character = lineAndCharacter.character + 1;
             const code = failure.getRuleName();
             const properties = `sourcepath=${fileName};linenumber=${line};columnnumber=${character};code=${code};`;
 
-            return `##vso[task.logissue type=warning;${properties}]${failureString}`;
+            return `##vso[task.logissue type=${failureSeverity};${properties}]${failureString}`;
         });
 
         return `${outputLines.join("\n")}\n`;
diff --git a/test/formatters/vsoFormatterTests.ts b/test/formatters/vsoFormatterTests.ts
index ce417aa7cee..8f394cc6c71 100644
--- a/test/formatters/vsoFormatterTests.ts
+++ b/test/formatters/vsoFormatterTests.ts
@@ -50,9 +50,9 @@ describe("VSO Formatter", () => {
         ];
 
         const expectedResult =
-            getFailureString(TEST_FILE, 1, 1, "first failure", "first-name") +
-            getFailureString(TEST_FILE, 2, 12, "mid failure", "mid-name") +
-            getFailureString(TEST_FILE, 9, 2, "last failure", "last-name");
+            getFailureString(TEST_FILE, 1, 1, "first failure", "first-name", "error") +
+            getFailureString(TEST_FILE, 2, 12, "mid failure", "mid-name", "error") +
+            getFailureString(TEST_FILE, 9, 2, "last failure", "last-name", "error");
 
         const actualResult = formatter.format(failures);
         assert.equal(actualResult, expectedResult);
@@ -76,9 +76,9 @@ describe("VSO Formatter", () => {
         ];
 
         const expectedResult =
-            getFailureString(TEST_FILE, 1, 1, "first failure", "first-name") +
-            getFailureString(TEST_FILE, 2, 12, "mid failure", "mid-name") +
-            getFailureString(TEST_FILE, 9, 2, "last failure", "last-name");
+            getFailureString(TEST_FILE, 1, 1, "first failure", "first-name", "error") +
+            getFailureString(TEST_FILE, 2, 12, "mid failure", "mid-name", "error") +
+            getFailureString(TEST_FILE, 9, 2, "last failure", "last-name", "error");
 
         const fixed = failures.slice();
 
@@ -86,6 +86,32 @@ describe("VSO Formatter", () => {
         assert.equal(actualResult, expectedResult);
     });
 
+    it("outputs correct severity", () => {
+        const maxPosition = sourceFile.getFullWidth();
+
+        const failures = [
+            createFailure(sourceFile, 0, 1, "first failure", "first-name", undefined, "error"),
+            createFailure(sourceFile, 32, 36, "mid failure", "mid-name", undefined, "warning"),
+            createFailure(
+                sourceFile,
+                maxPosition - 1,
+                maxPosition,
+                "last failure",
+                "last-name",
+                undefined,
+                "error",
+            ),
+        ];
+
+        const expectedResult =
+            getFailureString(TEST_FILE, 1, 1, "first failure", "first-name", "error") +
+            getFailureString(TEST_FILE, 2, 12, "mid failure", "mid-name", "warning") +
+            getFailureString(TEST_FILE, 9, 2, "last failure", "last-name", "error");
+
+        const actualResult = formatter.format(failures);
+        assert.equal(actualResult, expectedResult);
+    });
+
     it("handles no failures", () => {
         const result = formatter.format([]);
         assert.equal(result, "\n");
@@ -97,7 +123,9 @@ describe("VSO Formatter", () => {
         character: number,
         reason: string,
         code: string,
+        severity: string,
     ) {
-        return `##vso[task.logissue type=warning;sourcepath=${file};linenumber=${line};columnnumber=${character};code=${code};]${reason}\n`;
+        const properties = `sourcepath=${file};linenumber=${line};columnnumber=${character};code=${code};`;
+        return `##vso[task.logissue type=${severity};${properties}]${reason}\n`;
     }
 });