 |
 |
|
Try our new Certificate Revocation List Check Tool CRLcheck.exe is a tool developed to verify digital signatures of executable files. It collects files from known paths on your client, checks their signature, and checks Certificate Revocation Lists (CRL) and OCSP download. This helps avoid delays in launching files. |
||
Error: Some users added as members to a Microsoft 365 group in Outlook on the web may be given “Owner” permissions by default Important Security Notice for M365 Groups Between October 3 and October 31, 2025, Microsoft Exchange Online experienced an issue that affected Microsoft 365 (M365) Groups. During this period, when a new […]
Exchange Tenant, EXO, EWS Security change (Fehlervermeidung Security) Microsoft verbessert die Sicherheit von EWS und löst das Problem bei der Kombination von “per Tenant” und “per User” Rechten. Dies erleichtert es insbesondere grossen Unternehmen, Compliance-Vorgaben konsequent durchzusetzen. Ein wesentlicher Grund für diese Änderung ist, dass viele Personen im M365-Portal oder über Graph API Änderungen vornehmen, […]
In the OLD KB-Number: 982697 MS explains….. The default Behavior for downloading shared folders can be modified using Group Policy and registry settings. Some of these policies and registry values may have improved the performance of shared folders in earlier versions of Outlook or when the shared folders were located in Exchange Server on-premises mailboxes. […]
Recommendation 16.08.2024 for CVE-2024-38063 and IPV6 There is a patch from 2008-2022+ Servers so use it See following LINK on how to import the older OS patches into WSUS CVE-2024-38063, CVSS 9.8, import free 2008/R2 + 2012R2 into WSUS – www.butsch.ch https://www.butsch.ch/post/cve-2024-38063-cvss-9-8-how-to-import-the-free-2008-2008r2-patch-into-wsus/ If you can’t patch then as least options CAREFULLY consider disabling IPV6 the […]
Workaround ONLY works as long as you don’t close Outlook.exe (Don’t close Outlook after it works until MS solves problem) EX814289 Users may be unable to access shared calendars in the Outlook desktop app. Problem opening a shared calendar in Outlook Desktop, Outlook for Microsoft 365 Users who have access to Outlook via Office […]
Trellix ENS 10.7 deletes Windows Defender Update which come from WSUS-Server on German Server 2019 We just did see a false positive on Windows Defender Updates we provide via WSUS with autoaprove on a Windows Server 2019 German with Trellix ENS 10.7 and AMCORE 5554. The file was deleted from C:\Windows\SoftwareDistribution\Download\ Microsoft affected file: […]
Workaround ONLY works as long as you don’t close Outlook.exe (Don’t close Outlook after it works until MS solves problem) EX814289 Users may be unable to access shared calendars in the Outlook desktop app. Users who have access to Outlook on the web or Outlook for Windows (https://www.microsoft.com/store/productId/9NRX63209R7B?ocid=pdpshare) can use this connection method to access […]
Exchange SE (Subscription Edition), Exchange 2019 Nachfolger mit in-place Upgrade | Microsoft hat gerade Release-Informationen und eine Zeitlinie für die Einführung der neuen Exchange SE (Subscription Edition) veröffentlicht. Kunden können weiterhin rein On-Premises oder im Hybridmodus arbeiten, wie es ihren Bedürfnissen entspricht. Neu wird die Exchange SE jedoch ausschliesslich im Abonnementmodell erhältlich sein. […]
Powershell to show and log SMTP Port 25, 465, 2525 after Decomission old Exchange Server When decommissioning an Exchange Server, it’s common to install SMTP/IIS to capture and redirect the failing SMTP sender traffic, allowing us to monitor if there’s still traffic coming to the old Exchange. Below is a PowerShell script that you […]
CRLcheck.exe Certificate Revocation List Check Tool to automatic verify CRL and OCSP internet reachability of all your EXE files that your client runs. Download 11/2024 NEW Release 2.0.1.0 with OSCP check, Proxy Options, AIA Chain check etc. Version 2.0.1.0, https://www.butsch.ch/wp-content/uploads/tools/crlcheck/latest/crlcheck.7z Over the past 20 years, I have personally witnessed how Certificate Revocation […]
Here you will find all steps to protect from CVE-2024-21410 Exchange Leak. This sample handels and standlaone Exchange 2016 running on Server 2016. The customer has no DAG (Cluster), He is NOT in Hybrid Mode Classic or Modern (He has no CLOUD connection), all latest 02/2024 Windows Updates are installed, the latest CU for […]
Exchange CVE-2024-21410 2013/2016/2019 Extended Protection Kemp-F5 and Modern Hybrid Mode problem Primary target which is part of the attack: Make sure you ROLLOUT the Outlook.exe 02/2024 Patch. That is the most important thing. Esp. On Home Office/Remote Office which may have SMB/445 to WAN open and for VPN users NO traffic to/via VPN-2-HQ policy (Which […]
List or change Inboxrules employee have > Automatic E-Mail forwards to private or external E-Mail systems. Problem: In Exchange, users are able to forward E-Mail themself to an external private account. This is a problem because of compliance and if you don’t have a DLP (Data Lost Prevention). There are ways to prevent this (With […]
This post was published to Butsch.ch at 15:06:54 22.06.2023 M365/Azure, Full Hybrid Mode, M365 user unable to see free/Busy Room/meeting or book on-premise Account www.butsch.ch Category Exchange 2016 ; Exchange 2019 ; M365,AZURE,INTUNE ; Microsoft Exchange PROBLEM: The test.M365 (cloud) users are unable to access free/busy info from the on-premise room mailbox and […]
www.butsch.ch Resolve and find OAuth problem in Exchange Hybrid Setup Environment Short Understanding OAuth: OAuth (Open Authorization) is an industry-standard protocol that enables secure authorization for third-party applications without the need to disclose user credentials. It allows users to grant limited access to their resources on one site to another site, without sharing their credentials. […]
