https://www.m365.fm/entity/guest-access/The ability to add people from outside the organization to Microsoft 365 groups and Teams as guest objects in Microsoft Entra ID, controlled at tenant, team and sensitivity-label level.enhttps://www.m365.fm/community/u/mirko-p/blog/microsoft-365-guest-access-lifecycle/https://www.m365.fm/community/u/mirko-p/blog/microsoft-365-guest-access-lifecycle/Sun, 16 Aug 2026 15:15:05 -0000articleLearn how to establish a robust Microsoft 365 guest access lifecycle to prevent security risks, audit orphaned external accounts, and automate reviews.https://www.m365.fm/show/episodes/heiko-brenn/https://www.m365.fm/show/episodes/heiko-brenn/Sun, 16 Aug 2026 00:00:00 -0000episodeAs Microsoft 365 grows, Teams, SharePoint sites and guest accounts multiply until collaboration turns into noise. In this interview, Heiko Brenn of BCC uses music metaphors to show IT leaders and governance owners how ownership, lifecycle management…https://www.m365.fm/community/u/mirko-p/blog/mastering-microsoft-365-guest-access-balancing-security-and-productivity/https://www.m365.fm/community/u/mirko-p/blog/mastering-microsoft-365-guest-access-balancing-security-and-productivity/Wed, 12 Aug 2026 08:41:00 -0000articleWelcome back to the blog! If you have ever tried to collaborate on a project with external vendors, clients, or partners, you already know how essential guest colla…https://www.m365.fm/community/u/mirko-p/blog/decoding-the-cross-tenant-domino-effect-in-microsoft-entra-b2b-1/https://www.m365.fm/community/u/mirko-p/blog/decoding-the-cross-tenant-domino-effect-in-microsoft-entra-b2b-1/Tue, 11 Aug 2026 15:11:02 -0000articleWelcome back to the blog! If you have ever tried to set up a partnership with an external organization using Microsoft 365, you probably know that feeling of excite…https://www.m365.fm/community/u/mirko-p/blog/secure-guest-access-best-practices-and-strategies-for-microsoft-teams-and-sharepoint/https://www.m365.fm/community/u/mirko-p/blog/secure-guest-access-best-practices-and-strategies-for-microsoft-teams-and-sharepoint/Thu, 21 May 2026 10:41:25 -0000articleSecure guest access means opening your digital doors—without leaving the back window wide open. In Microsoft Teams and SharePoint environments, letting guests…https://www.m365.fm/community/u/mirko-p/blog/teams-settings-overview-navigating-microsoft-teams-options/https://www.m365.fm/community/u/mirko-p/blog/teams-settings-overview-navigating-microsoft-teams-options/Wed, 20 May 2026 10:33:39 -0000articleExplore the most important Microsoft Teams settings for notifications, meetings, messaging, devices, privacy, apps, and organizational control.https://www.m365.fm/community/u/mirko-p/blog/managing-guest-access-in-microsoft-365-technical-strategies-for-secure-collaboration/https://www.m365.fm/community/u/mirko-p/blog/managing-guest-access-in-microsoft-365-technical-strategies-for-secure-collaboration/Wed, 20 May 2026 10:28:43 -0000articleLearn how to configure and govern Microsoft 365 guest access across Teams and SharePoint while reducing exposure and improving collaboration.https://www.m365.fm/community/u/mirko-p/blog/managing-external-users-in-microsoft-teams-meetings/https://www.m365.fm/community/u/mirko-p/blog/managing-external-users-in-microsoft-teams-meetings/Wed, 13 May 2026 09:49:19 -0000articleLearn external users in Teams meetings with practical guidance on setup, privacy, security, accessibility, governance, and real-world use.https://www.m365.fm/community/u/mirko-p/blog/external-chat-in-teams-how-to-enable-secure-cross-organization-communication/https://www.m365.fm/community/u/mirko-p/blog/external-chat-in-teams-how-to-enable-secure-cross-organization-communication/Tue, 28 Apr 2026 17:43:26 -0000articleLearn external chat in Microsoft Teams with practical guidance on setup, productivity, security, governance, and real-world use.https://www.m365.fm/community/u/mirko-p/blog/mastering-sharepoint-guest-access-controls-for-secure-collaboration/https://www.m365.fm/community/u/mirko-p/blog/mastering-sharepoint-guest-access-controls-for-secure-collaboration/Fri, 17 Apr 2026 02:52:07 -0000articleSharePoint: Manage Guest Access & Permissions for Users and Sites. Secure sharepoint external collaboration with clear permissions. Control user & site access.https://www.m365.fm/community/u/mirko-p/blog/microsoft-teams-guest-access-and-guest-user-management/https://www.m365.fm/community/u/mirko-p/blog/microsoft-teams-guest-access-and-guest-user-management/Sat, 04 Apr 2026 08:18:25 -0000articleLearn how to govern Microsoft Teams guest access, Entra ID B2B collaboration, external sharing, lifecycle reviews, and security controls.https://www.m365.fm/show/episodes/73-of-m365-deployments-make-this-governance-mistake/https://www.m365.fm/show/episodes/73-of-m365-deployments-make-this-governance-mistake/Sun, 22 Mar 2026 00:00:00 -0000episodeThis episode argues that the biggest governance mistake in Microsoft 365 isn’t misconfiguration—it’s timing. Most organizations treat governance as something to “add later,” but by doing that, they unintentionally design failure into the system from day one.…https://www.m365.fm/community/u/mirko-p/blog/mastering-microsoft-teams-external-collaboration-controls/https://www.m365.fm/community/u/mirko-p/blog/mastering-microsoft-teams-external-collaboration-controls/Fri, 13 Mar 2026 08:34:59 -0000articleMastering Microsoft Teams external collaboration controls: Learn to manage external access, invite people outside your organization and configure settings in the Teams admin center for secure Microsohttps://www.m365.fm/community/u/mirko-p/blog/guest-access-governance-in-microsoft-365-the-complete-guide/https://www.m365.fm/community/u/mirko-p/blog/guest-access-governance-in-microsoft-365-the-complete-guide/Tue, 24 Feb 2026 11:12:04 -0000articleGovern Microsoft 365 guest access across Teams and SharePoint with onboarding, access reviews, Conditional Access, lifecycle controls, and guest offboarding.https://www.m365.fm/community/u/mirko-p/blog/microsoft-365-governance-checklist-a-simple-it-guide/https://www.m365.fm/community/u/mirko-p/blog/microsoft-365-governance-checklist-a-simple-it-guide/Mon, 23 Feb 2026 07:56:21 -0000articleUse this Microsoft 365 governance checklist to manage identity, security, compliance, Teams, SharePoint, Copilot, lifecycle, and tenant operations.https://www.m365.fm/show/episodes/teams-admin-center-governance/https://www.m365.fm/show/episodes/teams-admin-center-governance/Fri, 23 Jan 2026 00:00:00 -0000episodeIn this episode, we dismantle a common Microsoft Teams governance myth: that the Teams Admin Center is the central command for controlling Teams behavior and enforcing governance. Most organizations treat the Admin Center like a control tower — but it’s…https://www.m365.fm/show/episodes/teams-security-hardening-best-practices/https://www.m365.fm/show/episodes/teams-security-hardening-best-practices/Wed, 03 Dec 2025 00:00:00 -0000episodeYour “private” Microsoft Teams channels are quietly bleeding data – and default settings are to blame. In this episode, we walk through real-world incidents where dormant guest accounts, synced libraries, and careless PII pastes turned Teams into a silent…https://www.m365.fm/show/episodes/sharepoint-sprawl-killing-your-business/https://www.m365.fm/show/episodes/sharepoint-sprawl-killing-your-business/Sat, 22 Nov 2025 00:00:00 -0000episodeYour SharePoint isn’t messy – it’s a digital landfill you’re paying to host. Dead projects, duplicate “final_v7_REAL_final” files, ghost guest access, broken links, and a Copilot happily hallucinating on rotten content. This video shows you how to turn that…https://www.m365.fm/show/episodes/unlock-ironclad-m365-security-without-annoying-users/https://www.m365.fm/show/episodes/unlock-ironclad-m365-security-without-annoying-users/Mon, 03 Nov 2025 00:00:00 -0000episodeThis episode dives deep into the foundations of Microsoft 365 security and why locking down your M365 tenant has never mattered more. The conversation opens with a look at what “Microsoft 365 security” truly means today: a constantly evolving mix of policies…https://www.m365.fm/show/episodes/youre-probably-using-teams-channels-wrong/https://www.m365.fm/show/episodes/youre-probably-using-teams-channels-wrong/Mon, 03 Nov 2025 00:00:00 -0000episodeMicrosoft Teams channels are one of the most powerful yet misunderstood features in the entire Teams platform, and using them correctly can make or break your organization’s communication. In this episode, we dive into how Teams channels actually work, why…https://www.m365.fm/show/episodes/guest-access-in-m365-brilliant-or-broken/https://www.m365.fm/show/episodes/guest-access-in-m365-brilliant-or-broken/Mon, 03 Nov 2025 00:00:00 -0000episodeGuest access in M365 isn’t a switch—it’s three identity layers and four services that don’t always agree. That mismatch creates silent exposure: a guest “allowed” in Teams can inherit broader SharePoint access; Purview often spots it after the fact. The fix…https://www.m365.fm/show/episodes/the-hidden-danger-of-m365-guest-accounts/https://www.m365.fm/show/episodes/the-hidden-danger-of-m365-guest-accounts/Mon, 03 Nov 2025 00:00:00 -0000episodeYour Microsoft 365 tenant is probably full of “guests who never left.” Contractors, vendors, and partners get invited for short projects—and their accounts quietly live on for years. That sprawl creates hidden risk: lingering access to SharePoint and Teams…https://www.m365.fm/show/episodes/master-dataverse-security-stop-external-leaks-now/https://www.m365.fm/show/episodes/master-dataverse-security-stop-external-leaks-now/Mon, 03 Nov 2025 00:00:00 -0000episodeYour Power App didn’t get “hacked”—it was over-permitted. Treating Dataverse like SharePoint (big buckets, broad roles) turns guest access into a data breach waiting to happen. Dataverse is a relational fortress built on granular privileges…https://www.m365.fm/show/episodes/sharepoint-online-permission-auditing-at-scale/https://www.m365.fm/show/episodes/sharepoint-online-permission-auditing-at-scale/Thu, 14 Aug 2025 00:00:00 -0000episodeManual SharePoint reviews don’t scale. Use PnP PowerShell + Microsoft Graph + Azure Automation to enumerate every site, expand nested/group/inherited permissions, and deliver a clean, daily report. App-only auth, throttling-safe queries, and diff alerts turn…https://www.m365.fm/show/episodes/the-b2b-direct-connect-trap-hidden-settings-exposed/https://www.m365.fm/show/episodes/the-b2b-direct-connect-trap-hidden-settings-exposed/Tue, 05 Aug 2025 00:00:00 -0000episodeFlip One Azure AD Switch, Break Three Workflows? The Hidden B2B, Teams, and Conditional Access Domino Effect—And How to Stop It If B2B Direct Connect “works” until presence, file sharing, or guest invites start failing, you’re seeing the silent chain reaction…