diff --git a/package.json b/package.json
index fd45f3c456..22fe669a80 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "workspace"
   ],
   "defaults": {
-    "roslyn": "5.0.0-1.25204.1",
+    "roslyn": "5.0.0-1.25214.2",
     "omniSharp": "1.39.12",
     "razor": "10.0.0-preview.25210.3",
     "razorOmnisharp": "7.0.0-preview.23363.1",
diff --git a/src/lsptoolshost/copilot/contextProviders.ts b/src/lsptoolshost/copilot/contextProviders.ts
index d9394d283d..403576ec0c 100644
--- a/src/lsptoolshost/copilot/contextProviders.ts
+++ b/src/lsptoolshost/copilot/contextProviders.ts
@@ -15,6 +15,8 @@ export const copilotLanguageServerExtensionComponentName = '@microsoft/visualstu
 export const copilotLanguageServerExtensionAssemblyName = 'Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer.dll';
 const copilotLanguageServerExtensionCapabilitiesFileName = 'capabilities.json';
 
+type ActiveExperiments = { [name: string]: string | number | boolean | string[] };
+
 export interface DocumentContext {
     textDocument: lsp.TextDocumentIdentifier;
     position: lsp.Position;
@@ -25,12 +27,19 @@ export interface ContextResolveParam {
     completionId: string;
     timeBudget: number;
     data?: any;
+    activeExperiments: ActiveExperiments;
 }
 
-const resolveContextMethodName = 'roslyn/resolveContext';
-const resolveContextMethodSupportedVersion = '1';
-const resolveContextRequest = new lsp.RequestType<ContextResolveParam, SupportedContextItem[], void>(
-    resolveContextMethodName,
+const oldResolveContextMethodName = 'roslyn/resolveContext';
+const oldresolveContextMethodSupportedVersion = '1';
+const newResolveContextMethodName = 'roslyn/resolveContext@2';
+const newResolveContextMethodSupportedVersion = '1';
+const oldResolveContextRequest = new lsp.RequestType<ContextResolveParam, SupportedContextItem[], void>(
+    oldResolveContextMethodName,
+    lsp.ParameterStructures.auto
+);
+const newResolveContextRequest = new lsp.RequestType<ContextResolveParam, SupportedContextItem[], void>(
+    newResolveContextMethodName,
     lsp.ParameterStructures.auto
 );
 
@@ -60,6 +69,8 @@ function createContextResolveParam(request: ResolveRequest): ContextResolveParam
         },
         completionId: request.completionId,
         timeBudget: request.timeBudget,
+        data: request.data,
+        activeExperiments: Object.fromEntries(request.activeExperiments),
     };
     return contextResolveParam;
 }
@@ -77,7 +88,8 @@ export function registerCopilotContextProviders(
     devkit.activate().then(async (devKitExports) => {
         try {
             // Check if the Copilot Language Server extension is installed and has the correct capabilities
-            let hasCapabilities = false;
+            // 0 means not support, 1 means old version, 2 means new version
+            let hasCapabilities = 0;
             const copilotServerExtensionfolder = devKitExports.components[copilotLanguageServerExtensionComponentName];
             if (copilotServerExtensionfolder) {
                 const capabilitiesFilePath = path.join(
@@ -85,18 +97,26 @@ export function registerCopilotContextProviders(
                     copilotLanguageServerExtensionCapabilitiesFileName
                 );
                 const capabilitiesContent = await readJsonSync(capabilitiesFilePath);
-                if (
-                    capabilitiesContent?.capabilities?.find(
-                        (capability: any) =>
-                            capability?.method === resolveContextMethodName &&
-                            capability?.version === resolveContextMethodSupportedVersion
-                    )
-                ) {
-                    hasCapabilities = true;
+                for (const capability of capabilitiesContent?.capabilities ?? []) {
+                    if (
+                        capability.method === oldResolveContextMethodName &&
+                        capability.version === oldresolveContextMethodSupportedVersion
+                    ) {
+                        hasCapabilities = 1;
+                        channel.debug(`supported 'roslyn/resolveContext' method found in capabilities.json`);
+                        break;
+                    } else if (
+                        capability.method === newResolveContextMethodName &&
+                        capability.version === newResolveContextMethodSupportedVersion
+                    ) {
+                        hasCapabilities = 2;
+                        channel.debug(`supported 'roslyn/resolveContext@2' method found in capabilities.json`);
+                        break;
+                    }
                 }
             }
 
-            if (!hasCapabilities) {
+            if (hasCapabilities === 0) {
                 channel.debug(
                     `Failed to find compatible version of context provider from installed version of ${csharpDevkitExtensionId}.`
                 );
@@ -131,11 +151,18 @@ export function registerCopilotContextProviders(
                             if (!contextResolveParam) {
                                 return [];
                             }
-                            const items = await languageServer.sendRequest(
-                                resolveContextRequest,
-                                contextResolveParam,
-                                token
-                            );
+                            const items =
+                                hasCapabilities === 1
+                                    ? await languageServer.sendRequest(
+                                          oldResolveContextRequest,
+                                          contextResolveParam,
+                                          token
+                                      )
+                                    : await languageServer.sendRequest(
+                                          newResolveContextRequest,
+                                          contextResolveParam,
+                                          token
+                                      );
                             channel.trace(`Copilot context provider resolved ${items.length} items`);
                             return items;
                         },
diff --git a/test/lsptoolshost/integrationTests/documentSymbolProvider.integration.test.ts b/test/lsptoolshost/integrationTests/documentSymbolProvider.integration.test.ts
index 9e489bed97..3d0342f08b 100644
--- a/test/lsptoolshost/integrationTests/documentSymbolProvider.integration.test.ts
+++ b/test/lsptoolshost/integrationTests/documentSymbolProvider.integration.test.ts
@@ -50,11 +50,11 @@ describe(`Document Symbol Tests`, () => {
         expect(symbols[0].children[0].kind).toBe(vscode.SymbolKind.Field);
 
         // Finalize
-        expect(symbols[0].children[3].name).toBe('Finalize');
+        expect(symbols[0].children[3].name).toBe('~C');
         expect(symbols[0].children[3].kind).toBe(vscode.SymbolKind.Method);
 
         // Ctor
-        expect(symbols[0].children[4].name).toBe('.ctor');
+        expect(symbols[0].children[4].name).toBe('C');
         expect(symbols[0].children[4].kind).toBe(vscode.SymbolKind.Method);
 
         // EventHandler E1
@@ -62,17 +62,17 @@ describe(`Document Symbol Tests`, () => {
         expect(symbols[0].children[5].kind).toBe(vscode.SymbolKind.Event);
 
         // explicit operator int(C c1)
-        expect(symbols[0].children[11].name).toBe('op_Explicit');
+        expect(symbols[0].children[11].name).toBe('explicit operator Int32');
         expect(symbols[0].children[11].detail).toBe('explicit operator int(C c1)');
         expect(symbols[0].children[11].kind).toBe(vscode.SymbolKind.Operator);
 
         // implicit operator int(C c1)
-        expect(symbols[0].children[12].name).toBe('op_Implicit');
+        expect(symbols[0].children[12].name).toBe('implicit operator C');
         expect(symbols[0].children[12].detail).toBe('implicit operator C(int i)');
         expect(symbols[0].children[12].kind).toBe(vscode.SymbolKind.Operator);
 
         // implicit operator int(C c1)
-        expect(symbols[0].children[12].name).toBe('op_Implicit');
+        expect(symbols[0].children[12].name).toBe('implicit operator C');
         expect(symbols[0].children[12].detail).toBe('implicit operator C(int i)');
         expect(symbols[0].children[12].kind).toBe(vscode.SymbolKind.Operator);
 
@@ -82,7 +82,7 @@ describe(`Document Symbol Tests`, () => {
         expect(symbols[0].children[13].kind).toBe(vscode.SymbolKind.Method);
 
         // operator !=
-        expect(symbols[0].children[14].name).toBe('op_Inequality');
+        expect(symbols[0].children[14].name).toBe('operator !=');
         expect(symbols[0].children[14].detail).toBe('operator !=(C c1, int i)');
         expect(symbols[0].children[14].kind).toBe(vscode.SymbolKind.Operator);