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Exchange HealthChecker.ps1 reports error Packets Received Discarded: xx — Error: This value should be at 0. We are also seeing this value being rather high so this can cause a performance impact on a system. Known Issue with vmxnet3: ‘Large packet loss at the guest operating system level on the VMXNET3 vNIC in ESXi (2039495) […]
Exchange Online: EWS Deprecation Timeline Microsoft will permanently retire Exchange Web Services (EWS) in Exchange Online. Important Dates October 2026 → Microsoft starts globally disabling EWS for all tenants. April 2027 → EWS fully disabled everywhere. Important for IT Admins Starting in 2025, admins can already manually disable EWS: * Organization-wide * Per user/mailbox This […]
Microsoft releases emergency Windows Server updates to fix unexpected reboots Microsoft has released a set of out-of-band (OOB) interim updates to address a critical issue causing unexpected or repeated reboots on Windows Server systems after recent cumulative updates. The problem affects multiple Windows Server versions and, in some environments, can impact core infrastructure roles such […]
Problem: The Exchange Hybrid Configuration Wizard does not open anymore or can’t be installed. You try to reopen the HCW from the URL: https://aka.ms/hybridwizard it flashes shortly and closes again. The reason is because default Browser switched to EDGE from IE. An Edge Chromium does not handle the ClickOnce Deployment method very well. Quick Solution > […]
Tasks/What you try to do: You try to integrate or update the new Trellix ENS 10.7.20 from last week into ePO to try the new ransomware options and also test if we can finally exclude On-Access rules by MD5 added to filenames. The update of the bundle via Software Manager fails. The DLL replacement […]
Script to identify you Office version and if affected. Outlook replaces accented and extended characters with question marks problem: When you write extended characters in an email, you may find that they display as question marks. https://support.microsoft.com/en-au/office/classic-outlook-replaces-accented-and-extended-characters-with-question-marks-c1fdb067-38ca-464a-bcb1-bd657a85e1d3 What we know: 100% Outlook, Office 365 problem side This is NOT an Exchange on-premise or Exchange Online/M365/Tenant […]
Exchange Subscription Edition Setup Error An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous MS SRV 2025 […]
Microsoft Office Security Feature Bypass Vulnerability | How to import into WSUS Server or deploy with Intune or Autopatch CVE-2026-21509, Security Vulnerability, Released: Jan 26, 2026, Last updated: Jan 26, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-21509 Impact Security Feature Bypass Max Severity Important Weakness CWE-807: Reliance on Untrusted Inputs in a Security Decision CVSS […]
EVENT, 11722, MSIinstaller, Application This issue keeps resurfacing, and we most commonly encounter it in customer environments running parallel systems—such as Citrix alongside VDI—but it also appears in traditional Windows desktop deployments. Our observations suggest a strong correlation with scenarios where the same user account is actively used across multiple platforms at the same time […]
Windows Server 2019 End of Life – Technical Deep Dive for System Engineers Server 2019 End of Life – Facts, Dates and Technical Impact Windows Server 2019 is deeply integrated in many enterprise environments: Active Directory, file services, Hyper‑V, Failover Clustering, SQL backends, RDS and line‑of‑business workloads. While it is still stable and widely deployed, […]
CRL Check for Windows Environments CRL check is a tool designed to collect executables from most used paths on your client. It checks whether they are digitally signed with a code certificate and then retrieves the Certificate Revocation Lists (CRL) and OCSP for each signed file it finds. It then automatic verifies if the client […]
Migration von Trellix Endpoint ENS 10.7.19 fehlerhaft ENS Oberfläche zeigt Fehler: Error commincating with the Event Log (Windows Defender ist aktiv) mfeesp.exe verursacht Abstürze In der ENS-GUI erscheint: “Error communicating with the Event Log” Application Event 1000 mit Verweis auf MSVCP140.DLL, MSVCP140_1.DLL, MSVCP140_2.DLL, MSVCP140_atomic_wait.dll oder MSVCP140_codecvt_ids.DLL Betroffen: Microsoft Windows 11 24H2 sowie Windows Server 2016 […]
Unable to migrate to Trellix Trellix Endpoint Security ENS 10.7.19 and ENS GUI crash with event 1000 (Update/migration/upgrade) mfeesp.exe crashing GUI: Error communicating with the Event Log Application Event 1000 from MSVCP140.DLL, MSVCP140_1.DLL,MSVCP140_2.DLL, MSVCP140_atomic_wait.dll or MSVCP140_codecvt_ids.DLL Affected OS we have seen with error: Microsoft Windows W11 24H2 Microsoft Server 2016 Microsoft Server 2019 Terminal Server […]
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 […]
PowerShell script to check if you SMB setup is 25H2 ready Windows 11 25H2 – Small Update, Big Impact for SMB Environments Windows 11 25H2 is now being offered on home and business systems as an Enablement Pack. This means it’s not a full new installation — instead, it’s a small ~50 MB update […]
