Issue with Azure DevOps API Call using OAuth Token

Question

Hello Community,

I'm facing an issue with an API call to Azure DevOps and would appreciate any insights or suggestions. Background: I have set up an OAuth process to authenticate with Azure DevOps. The process seems to work fine, and I am able to retrieve an access token. Here's the relevant part of my code for acquiring the token:

// MSAL Configuration and Setup // ... router.get("/callback", async (req, res) => { const tokenRequest = { code: req.query.code, scopes: ["https://app.vssps.visualstudio.com/user_impersonation"], redirectUri: ${process.env.VITE_API_URL}/callback, codeVerifier: adoCache.get(req.query.state)?.codeVerifier }; const response = await cca.acquireTokenByCode(tokenRequest); adoCache.set(req.query.state, { accessToken: response.accessToken }); });

The Issue: When I use the retrieved access token to make a call to the Azure DevOps API, it seems to be failing. Here's how I'm making the call:

const orgUrl = https://dev.azure.com/testxxx; const axiosInstance = axios.create({ baseURL: orgUrl, headers: { 'Authorization': Bearer ${adoData.accessToken}, 'Content-Type': 'application/json' } }); const wiql = { query: "SELECT [System.Id], [System.Title], [System.State] FROM WorkItems" }; try { const response = await axiosInstance.post('/_apis/wit/wiql?api-version=7.2-preview.2', wiql); // Further processing... } catch (error) { // Error handling... } Despite the token seemingly being valid, the API call is not successful. Instead of the expected JSON response, I seem to be getting an HTML response, suggesting that the call is being redirected to a login page. Attempts to Resolve:

• I've verified that the token is indeed being retrieved and passed in the header.
• The scopes and request format seem to be correct as per the Azure DevOps documentation.
• I've tried different variations of the API endpoint and checked the token scopes.

I'm at a bit of a loss as to why this might be happening. Any guidance or advice on what might be going wrong or what I could try next would be greatly appreciated. Thank you!