How to search emails in shared mailboxes in Outlook 365
When I search keyword, Outlook only shows the result from my default mailbox (personal mailbox). I have linked 2 more common mailboxes that I share with my team. None of us is able to find emails in the se common mailboxes. When we search for the unique keywords, Outlook only shows result from default Mailbox. OS: Windows 10Outlook Classic Stamps Its Style on the New Outlook
In an attempt to ease the transition to the new Outlook, Microsoft has introduced the classic Outlook style for the new Outlook and OWA. The style essentially redoes the existing GUI for the web clients to make their appearance very close to the win32 client. After using the two clients side by side for a week, sometimes I find it difficult to know what client I’m interacting with. The question is what average users rather than IT people think of a different face for the new Outlook. https://office365itpros.com/2026/09/07/classic-outlook-style/
Planning a Google Workspace to Microsoft 365 Migration? What Should You Consider?
Hi everyone, Has anyone recently migrated from Google Workspace to Microsoft 365? I’m interested in knowing what challenges you faced during the migration, especially around mailbox data, calendars, contacts, user mapping, or the final cutover process. For those planning the migration, what are the key things you recommend preparing before getting started? Would like to hear your experiences and suggestions.Exchange Server OWA does not display lnline Images after EEMS M2.1.0 mitigation.
Exchange Server can automatically apply applicable mitigations by using the Exchange Emergency Mitigation Service (EEMS) to retrieve mitigation information from Microsoft's Office Config Service (OCS). EEMS can apply several types of mitigations: 1. IIS URL Rewrite Rule Mitigation: Blocks specific malicious HTTP request patterns that could put an Exchange Server at risk. 2. Exchange Service Mitigation: Disables a vulnerable Exchange service. 3. Application Pool Mitigation: Disables a vulnerable application pool on the Exchange Server. In this case, inline images were displayed correctly in Outlook, but the same images were not displayed in OWA. The issue was identified as being related to the IIS URL Rewrite rule deployed by the M2.1.0 mitigation for CVE-2026-42897. Verification Run the following commands in the Exchange Management Shell. 1. Check the installed Exchange Security Update version (Get-Command ExSetup.exe).FileVersionInfo.ProductVersion 2. Check whether the Emergency Mitigation Service is enabled Get-OrganizationConfig | fl MitigationsEnabled 3. Check applied and blocked mitigations Get-ExchangeServer | fl Name,MitigationsApplied,MitigationsBlocked For example, a server affected by this issue may show: MitigationsApplied : {PING1, M2.1.0} MitigationsBlocked : {M2.1.0} 4. Check the IIS URL Rewrite rule Import-Module WebAdministration Get-WebConfigurationProperty -PSPath "IIS:\Sites\Default Web Site\owa" -Filter "system.webServer/rewrite/outboundRules/rule" -Name "." | Select-Object name The following rule may be present: EEMS M2.1 OWA CSP - outbound Microsoft provides Security Updates (SUs) to address security vulnerabilities in Exchange Server. Exchange Server SE is currently supported, while Exchange Server 2016 and Exchange Server 2019 can continue to receive applicable security updates through the Extended Security Updates (ESU) program. Note: Exchange Server 2016 and Exchange Server 2019 reached end of support in October 2025. ESU must be purchased separately to continue receiving applicable security updates. Resolution 1. Install the July 2026 SU or later Install the July 2026 SU or a later Security Update (preferably the latest available SU), and then restart the server. Installing the update does not automatically remove the previously applied CVE-2026-42897 mitigation. 2. Block M2.1.0 from being reapplied If M2.1.0 is not already listed under MitigationsBlocked, add it: Set-ExchangeServer -Identity EXSE-01 -MitigationsBlocked @{Add="M2.1.0"} Note: Adding M2.1.0 to MitigationsBlocked does not remove the IIS rules that have already been applied. It prevents EEMS from reapplying the M2.1.0 mitigation. 3. Back up the OWA web.config file Copy-Item ` -Path "$env:ExchangeInstallPath\FrontEnd\HttpProxy\owa\web.config" ` -Destination "$env:ExchangeInstallPath\FrontEnd\HttpProxy\owa\web.config.$((Get-Date).ToString('yyyyMMdd-HHmmss')).bak" 4. Remove the M2.1.0 IIS URL Rewrite rule and precondition Remove-WebConfigurationProperty ` -PSPath "IIS:\Sites\Default Web Site\owa" ` -Filter "system.webServer/rewrite/outboundRules" ` -Name "." ` -AtElement @{name="EEMS M2.1 OWA CSP - outbound"} Then remove the associated precondition: Remove-WebConfigurationProperty ` -PSPath "IIS:\Sites\Default Web Site\owa" ` -Filter "system.webServer/rewrite/outboundRules/preConditions" ` -Name "." ` -AtElement @{name="EEMS M2.1 OWA SPA HTML shell - precondition"} Verification After Rollback Without restarting the Exchange Server or running IISReset, reopen the same OWA message that previously failed to display the inline image and verify that the image is now displayed correctly. Test Results I reproduced the issue in an Exchange Server SE June 2026 SU test environment. After EEMS automatically applied the M2.1.0 mitigation, an inline PNG image that was displayed correctly in Outlook was no longer displayed in OWA. After blocking M2.1.0 and removing the M2.1.0 IIS rules according to Microsoft's rollback guidance, the inline image in the same message was displayed correctly again in OWA. No Exchange Server restart or IISReset was required after removing the IIS rules.Turning off email notifications about new comments in one certain file
Hi All! I found a solution to turn off all email notifications on new comments in my shared files (through settings on SharePoint), but it doesn't really solve my problem. In project files I work on with my colleagues, email notifications are helpful for monitoring workflows and streamline the process. At the same time, I'm an owner of yearly excel files shared with a big team in order to monitor the work on all clients and automate the visualization of it, but it gets commented on a lot and I don't need to get all of that on my Outlook. Is there any way to turn off email notifications about new comments for just one file without turning them off on all my shared files? Kind regards, Jakub BanasikThe Demise of the OWA Light Client
On July 8, Microsoft said that they will retire the OWA Light client for Exchange Server in August 2026. But what happened to the OWA Light client for Exchange Online? It seems like Microsoft announced the retirement of OWA Light for Exchange Online in June 2024, but didn’t really make the fact clear in a blog post about consumer accounts. In any case, you can’t run OWA Light for Exchange Online, even if you wanted to. https://office365itpros.com/2026/07/17/owa-light-retirement/
