Sensitivity label "Certificate Error"
When applying Sensitivity Labels in Microsoft Office applications, we receive the following certificate warning: "The certificate issuer for this site is untrusted or unknown. Do you wish to proceed?" We have already excluded the required Microsoft Azure URLs from the firewall and disabled SSL/TLS inspection, but the issue still persists. Observations: 1.On the same domain-joined computer, when signed in with a local user account, Sensitivity Labels work correctly without any errors. 2.When signed in with a domain user account, the certificate warning appears while applying or accessing Sensitivity Labels. Could you please help us identify the root cause and provide a solution? Your assistance in troubleshooting this issue would be greatly appreciated.Primer: How to Use RBAC for Applications to Control App Use of the Mail.Send Permission
The temptation to use the Mail.Send application permission in scripts can lead PowerShell developers into trouble because the permission allows access to all mailboxes, including sensitive executive and financial mailboxes. Fortunately, RBAC for Applications allows tenants to control the access that apps have to mailboxes and other Exchange content. All explained here with an example script to test RBAC of Applications. https://office365itpros.com/2026/02/17/mail-send-rbac-for-applications/External people can't open files with Sensitivity Label encryption.
Question: What are the best practices for ensuring external users can open files encrypted with Sensitivity Labels? Hi all. I've been investigating proper setup of sensitivity labels in Purview, and the impact on user experience. The prerequisites are simple enough, creating and configuring the labels reasonably straightforward, and publishing them is a breeze. But using them appears to be a different matter! Everything is fine for labels that don't apply encryption (control access) or when used internally. However, the problems come when labels do apply encryption and information is sent externally. The result is that we apply a label to a document, attach that document to an email, and send it externally - and the recipient says they can't open it and they get an error that their email address is not in our directory. This is because due to the encryption, the external user needs to authenticate back to our tenant, and if they're not in our tenant they obviously can't do this so the files won't open. So, back to the question above. What's the easiest / most secure / best way to add any user we might share encrypted content with to our tenant. As I see it we have the following options: Users have to request Admins add the user as a Guest in our tenant before they send the content. Let's face it, they'll not do this and/or get frustrated. Users share encrypted content directly from SharePoint / OneDrive, rather than attaching it to emails (as that would automatically add the external person as a Guest in the tenant). This will be fine in some circumstances, but won't always be appropriate (when you want to send them a point-in-time version of a doc). With good SharePoint setup, site Owners would also have to approve the share before it gets sent which could delay things. Admins add all possible domains that encrypted content might be shared with to Entra B2B Direct Connect (so the external recipient doesn't have to be our tenant). This may not be practical as you often don't know who you'll need to share with and we work with hundreds of organisations. The bigger gotcha is that the external organisation would also have to configure Entra B2B Direct Connect. Admins default Entra B2B Direct Connect to 'Allow All'. This opens up a significant attack surface and also still requires any external organisation to configure Entra B2B Direct Connect as well. I really want to make this work, but it need to be as simple as possible for the end users sharing sensitive or confidential content. And all of the above options seem to have significant down-sides. I'm really hoping someone who uses Sensitivity Labels on a day-to-day basis can provide some help or advice to share their experiences. Thanks, Oz.
Issues with Sensitivity Labels and "Specific email addresses or domains" - Not working
Hello! We have enabled Sensitivity Labels in our tenant. The access control settings for the label states that a specific domain gets the permission "Co-Author". When we enable the Sensitivity label on a document and sent it towards the approved domain, it results in an error message when authenticating to open the document: "Selected user account does not exist in tenant 'Veni AS' and cannot access the application in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account." After doing some research I did some changes to the external domain within the Cross-tenant settings. The external domain now has the following settings: Inbound access: Allow access on external users and groups, within B2B Collaboration Allow access on external users and groups, within B2B direct connect Trust multifactor authentication from Microsoft Entra tenants, within Trust settings. Outbound access: Allow access on users and groups, within B2B Collaboration Allow access on users and groups, within B2B direct connect External Identities: Block access for external users and groups. (Inherited from default) After doing this change, I no longer get the same error message as above when authenticating to open the labeled document. Now I get the following error message: "You are not signed in to office with an account that has permission to open this document. You may sign in a new account into Office that has permission or request permission from the content owner" I have this working from another tenant to the same external domain and I have cross-checked the settings. Any idea on how to proceed, or if it is any obvious change I need to make in order to get this to work? All feedback appreciated! :-)Track Sensitivity Label Downgrades and Removals with Audit Log Data
The Purview Insider Risk Management solution can do all sorts of clever things, like tracking sensitivity label downgrades and removals as an indicator that a user might be preparing to exfiltrate data. The same kind of checking can be done by using the events captured in the audit log when people remove or change sensitivity labels. All in a few lines of PowerShell… https://office365itpros.com/2024/11/20/sensitivity-label-downgrades/
I lost my Admin privileges in Microsoft 365
So, I'm working in a corporate company and we had services purchased like Azure, PowerBI etc. that we were paying for a long time. And until today I was logging in with the Admin email to the 365 admin portal with my admin account. but today when I try that Email has lost it's admin privileges. And so to recover that account I tried directly connecting through the phone call which also had to go through an automated voice assistant. And even after finally connected with the call. the only way they were about to provide a help was to telling them what is the current admin account's email address. which is like the reason why we called them because we have a security breach and don't know who did that. And I had all my previous admin accounts with credentials and all payment details etc. but I had to talk to some guy for like 20 minutes that just repeating the same thing like tell me the current admin email so w can help you further. Like if I know that why would I even call them. And I have all the details of my previous info but how can I know what the email that the attacker has used in just one day.
Connect-Aipservice is not working
Hello everyone, Please is anyone able to connect to the aip service using powershell version 5.5 and above? Even after installing and importing the aip service module, the connect-aipservice failed to work with all its parameters. However, creating and publishing sensitivity label policy is working. Thanks.How to Handle an Unwanted Sensitivity Label
Sometimes sensitivity labels defined for use within a Microsoft 365 tenant turn out to be unnecessary. The question then is what to do with these unwanted sensitivity labels. The answer is to pause for thought, gather information, and then make an informed decision, all of which we discuss here. https://practical365.com/how-to-handle-an-unwanted-sensitivity-label/C# application with MIP SDK fails creating the FileEngine
Hi! I have a C# application which tries to create a FileEngine to unprotect AIP protected files. The application runs in Azure. Network connectivity is available. The MIP SDK logs look like this: Info 2024-06-05 11:49:15.652 common/api_utils.h:195 w3wp (6324) "Start calling success callback for API: protection_profile_load_async" mipns::TryExecuteSuccessCallback::<lambda_aa4c0887fcc47f487d59891ccfa0eff4>::operator () 5396 Info 2024-06-05 11:49:15.652 common/api_utils.h:197 w3wp (6324) "Ended calling success callback for API: protection_profile_load_async" mipns::TryExecuteSuccessCallback::<lambda_aa4c0887fcc47f487d59891ccfa0eff4>::operator () 5396 Info 2024-06-05 11:49:15.652 policy_profile_impl.cpp:522 w3wp (6324) "Starting API call: profile_add_engine_async scenarioId=55a8c9cb-bbe6-40bb-992f-10b54066f182" mipns::ProfileImpl::AddEngineAsync 1048 Info 2024-06-05 11:49:15.652 policy_profile_impl.cpp:522 w3wp (6324) "Ended API call: profile_add_engine_async" mipns::ProfileImpl::AddEngineAsync 1048 Info 2024-06-05 11:49:15.652 policy_profile_impl.cpp:522 w3wp (6324) "Starting API task: profile_add_engine_async" mipns::ProfileImpl::AddEngineAsync 1700 Info 2024-06-05 11:49:15.652 policy_profile_impl.cpp:522 w3wp (6324) "Starting API task: profile_add_engine_async scenarioId=55a8c9cb-bbe6-40bb-992f-10b54066f182" mipns::ProfileImpl::AddEngineAsync 1700 Info 2024-06-05 11:49:15.652 policy_profile_impl.cpp:244 w3wp (6324) "Starting to add policy engine with engine id: 09342290-3990-4ef9-bdeb-611113bcccee" `anonymous-namespace'::CreateEngineAsync 1700 Warning 2024-06-05 11:49:15.652 policy_engine_manager_impl.cpp:275 w3wp (6324) "Inconsistent label & sensitivity policy detected. Removing both from cache if it exists." mipns::PolicyEngineManagerImpl::DeletePolicyFromStorage 1700 Info 2024-06-05 11:49:15.652 policy_engine_manager_impl.cpp:358 w3wp (6324) "Loading new policy engine (requires fetch): 09342290-3990-4ef9-bdeb-611113bcccee" mipns::PolicyEngineManagerImpl::LoadNewEngineAsync 1700 Warning 2024-06-05 11:49:15.652 policy_engine_manager_impl.cpp:361 w3wp (6324) "New PolicyEngine was created without an identity. Dynamic content marking will be partially disabled, and URL redirect caching will be fully disabled." mipns::PolicyEngineManagerImpl::LoadNewEngineAsync 1700 Info 2024-06-05 11:49:15.652 auth_request_transformer.cpp:155 w3wp (6324) "Requesting auth token from app. Resource: 'https://syncservice.o365syncservice.com/', Authority: 'https://login.windows.net/common', Scope: '', Claims: ''" mipns::AuthRequestTransformer::GetAuthToken 1700 Info 2024-06-05 11:49:15.917 auth_request_transformer.cpp:169 w3wp (6324) "Authentication response time (seconds): 0.264937" mipns::AuthRequestTransformer::GetAuthToken 1700 Info 2024-06-05 11:49:15.932 http_director_impl.cpp:141 w3wp (6324) "Sending HTTP request: ID: {C3D930DE-50B3-40A8-8C44-0ED22007A6FB}, Type: GET, Url: https://dataservice.protection.outlook.com/PsorWebService/v1/ClientSyncFile/MipPolicies?supportedMaxVersion=1.0.50.0, Body Size: 0, Headers['ClientInfo'] = 'mip_ver=1.14.128;os_name=win;os_ver=10-0-20348;runtime=msvc-1929;arch=x86', Headers['Capabilities'] = 'BestEffortEntityMatch,BestEffortCCSIMatch,SchematizedDataContentType', Headers['Content-Type'] = 'application/xml;charset=utf-8', Headers['Authorization'] = 'UOID:2d3ea670-a6d7-4a66-85fe-0bcc9b5f563a;Tenant:tenant id;Audience:https://syncservice.o365syncservice.com/;Roles:UnifiedPolicy.Tenant.Read;" mipns::HttpDirectorImpl::DoSendHttp 1700 Info 2024-06-05 11:49:16.104 http_client_base.cpp:44 w3wp (6324) "HTTP response time (seconds): 0.185885 ID: {C3D930DE-50B3-40A8-8C44-0ED22007A6FB}" mipns::HttpClientBase::SendAsync::<lambda_b2b0e837acbc3dca3dadb2856c35cf30>::operator () 5756 Info 2024-06-05 11:49:16.120 oneds_helper.cpp:532 w3wp (6324) "OneDsHelper::WriteTelemetryEvent(policy_sync_acquire_policy)" mipns::OneDSHelper::WriteTelemetryEvent 5756 Info 2024-06-05 11:49:16.120 diagnostic_utils.cpp:80 w3wp (6324) "Send Telemetry. Event Name : [policy_sync_acquire_policy] App.ApplicationId: [application id], Pii: [None] App.ApplicationName: [AR_COSI_TEST_AIP], Pii: [None] App.ApplicationVersion: [1.0.0], Pii: [None] App.SessionId: [], Pii: [None] Engine.SessionId: [], Pii: [None] Event.CorrelationId: [3f4d9f3a-a5a1-40fc-bbdb-049f4d40889f], Pii: [None] Event.CorrelationIdDescription: [HttpDirector], Pii: [None] Event.Duration: [0.187074], Pii: [None] Event.ErrorType: [NetworkError], Pii: [None] Event.Failed.File: [src\core\api_impl\http\http_director_impl.cpp], Pii: [None] Event.Failed.Func: [mipns::HttpTelemetryHelper::NotifyOperationComplete], Pii: [None] Event.Failed.Line: [374], Pii: [None] Event.Failed.Message: [No HTTP response. Failed with: [NetworkError: 'HTTP connection failure Inner exception: [http_exception: 'WinHttpSendRequest: 12029: A connection with the server could not be established'], NetworkError.Category=NoConnection, HttpRequest.SanitizedUrl=https://dataservice.protection.outlook.com/PsorWebService/v1/ClientSyncFile/MipPolicies, HttpRequest.Id={C3D930DE-50B3-40A8-8C44-0ED22007A6FB}']], Pii: [None] Event.ParentCorrelationId: [948d1c35-91a9-47be-af1f-6d6a241125e5], Pii: [None] Event.ParentCorrelationIdDescription: [PolicyProfile], Pii: [None] Event.UniqueId: [eacab4b6-2048-4cf0-8d5c-cba215bcb6a0], Pii: [None] EventInfo.Level: [10], Pii: [None] EventInfo.PrivTags: [33554432], Pii: [None] MIP.Version: [1.14.128], Pii: [None] Request.CorrelationId: [{C3D930DE-50B3-40A8-8C44-0ED22007A6FB}], Pii: [None] Request.IsAsynchronous: [true], Pii: [None] Request.RequestBodySize: [0], Pii: [None] Request.TokenTenantId: [tenant id], Pii: [None] Request.Url: [https://dataservice.protection.outlook.com/PsorWebService/v1/ClientSyncFile/MipPolicies], Pii: [None] iKey: [ce9aa5fb5a414ecebb15af10715bd8ff-831d197e-fc97-4df6-b998-c8c13a0fc3ce-6768], Pii: [None] " mipns::WriteTelemetryEventToLog 5756 Info 2024-06-05 11:49:16.120 http_director_impl.cpp:38 w3wp (6324) "Received HTTP response: " `anonymous-namespace'::LogHttpOperationDetails 5756 Error 2024-06-05 11:49:16.120 http_director_impl.cpp:42 w3wp (6324) "HTTP operation {C3D930DE-50B3-40A8-8C44-0ED22007A6FB} failed: Failed with: [NetworkError: 'HTTP connection failure Inner exception: [http_exception: 'WinHttpSendRequest: 12029: A connection with the server could not be established'], NetworkError.Category=NoConnection, HttpRequest.SanitizedUrl=https://dataservice.protection.outlook.com/PsorWebService/v1/ClientSyncFile/MipPolicies, HttpRequest.Id={C3D930DE-50B3-40A8-8C44-0ED22007A6FB}']" `anonymous-namespace'::LogHttpOperationDetails 5756 This error does not occur on every tenant! Does anyone have a clue why this error occurs?
