SyntaxError: Unexpected token e in JSON at position 0 at JSON.parse (<anonymous>) at t.getIdTokenCredential

Please follow the issue template below. Failure to do so will result in a delay in answering your question.

Library

• msal@1.x.x or @azure/msal@1.x.x
• @azure/msal-browser@2.4.1
• @azure/msal-angular@0.x.x
• @azure/msal-angular@1.x.x
• @azure/msal-angularjs@1.x.x

Important: Please fill in your exact version number above, e.g. msal@1.1.3.

Framework

React

Description

Got a syntax error while trying to login Uncaught (in promise) SyntaxError: Unexpected token e in JSON at position 0 at JSON.parse (<anonymous>) at t.getIdTokenCredential (index.d9b6c51d.js:2) at t.e.getSpecificCredential (index.d9b6c51d.js:2) at index.d9b6c51d.js:2 at Array.forEach (<anonymous>) at t.e.getCredentialsFilteredByInternal (index.d9b6c51d.js:2) at t.e.getCredentialsFilteredBy (index.d9b6c51d.js:2) at t.e.readRefreshTokenFromCache (index.d9b6c51d.js:2) at t.<anonymous> (index.d9b6c51d.js:2) at index.d9b6c51d.js:2

Error Message

Uncaught (in promise) SyntaxError: Unexpected token e in JSON at position 0 at JSON.parse (<anonymous>) at t.getIdTokenCredential (index.d9b6c51d.js:2) at t.e.getSpecificCredential (index.d9b6c51d.js:2) at index.d9b6c51d.js:2 at Array.forEach (<anonymous>) at t.e.getCredentialsFilteredByInternal (index.d9b6c51d.js:2) at t.e.getCredentialsFilteredBy (index.d9b6c51d.js:2) at t.e.readRefreshTokenFromCache (index.d9b6c51d.js:2) at t.<anonymous> (index.d9b6c51d.js:2) at index.d9b6c51d.js:2

Security

• Is this issue security related?

Regression

• Did this behavior work before? Version: 2.2.0 I think so… this is the first time I’ve seen this error since upgrading to 2.4.1 from 2.2.0

MSAL Configuration

    const publicClientApp = new PublicClientApplication({
      auth: {
        clientId: this.clientId,
        authority: this.authority,
        redirectUri: this.loginRedirectUri,
        postLogoutRedirectUri: this.postLogoutRedirectUri
      },
      cache: {
        cacheLocation: "localStorage",
        storeAuthStateInCookie: isIEOrOldEdge // https://github.com/AzureAD/microsoft-authentication-library-for-js/issues/1188#issuecomment-634281307
      },
      system: {
        tokenRenewalOffsetSeconds: 60,
        iframeHashTimeout: 30000, // iframe is used to refresh the refresh_token as it has a 24h lifetime
        loggerOptions: {
          loggerCallback: MsalAuthContext.msalLoggerCallback,
          piiLoggingEnabled: false,
          logLevel: LogLevel.Verbose
        }
      }
    });

Reproduction steps

// Provide relevant code snippets here.
// For Azure B2C issues, please include your policies.

Expected behavior

No error

Browsers/Environment

• Chrome
• Firefox
• Edge
• Safari
• IE
• Other (Please add browser name here)

[pkanher617]

Please try using 2.5.2 if you are having issues. If this does not fix your problem comment here.

[narva001]

It is working for me now with version 2.5.2. Thank you @pkanher617