Microsoft is addressing an issue preventing users from installing Microsoft 365 desktop applications on Windows devices due to misconfigured authentication components. The affected versions are Microsoft 365 desktop apps version 2508 (Build 19127.20358) and version 2507 (Build 19029.20294). Microsoft is working on reconfiguring the authentication components, with a resolution expected to be deployed soon. The issue has been classified as incident OP1186186, indicating a critical service disruption. Additionally, another problem, tracked as MO1176905, is affecting some admins and users by restricting access to various Microsoft 365 services due to a misconfiguration related to Microsoft 365 Group SecurityEnabled settings. Recently, Microsoft resolved a bug related to Microsoft Intune and mitigated a DNS outage that affected global customers.