PowerApps - Please enable third party-cookies and site data in your browser settings. If you are using Chrome's Incognito mode, you can uncheck the 'Block third-party cookies' option on the Incognito langing page. Try again

 Hi All,

To resolve the above error, perform below steps

1. Select Settings.
2. Select Cookies and site permissions.
3. Expand Cookies and site data.
4. Click on "Add" under Block third-party cookies as shown below
5. Add [*.]powerapps.com and while adding this, put a check mark for "Including third-party cookies on this site"

Bingo, issue is fixed