September 2021

SharePoint Store Apps can not be added after installing the May 2021 CU

Problem Description After installing the May 2021 CU you will not be able to open or add new SharePoint Store apps, because the iframe from the appinv.aspx page is now blocked by default. This is an example of the error: Browser Error: Chrome-error://chromewebdata/:1 Refused to display ‘https://spaad.contoso.local/’ in a frame because it set multiple ‘X-Frame-Options’ […]