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.

M365/Exchange Hybrid OAuth Testing command, OAuth-Cert out-of-sync 4001, IIS VDIR OAuth wrong

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. […]

Exchange Tenant, EXO, EWS Security change (Fehlervermeidung Security), 02-2025

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, […]

Trellix ePolicy Orchestrator 5.10.0 Service Pack 1 Update 4

Trellix ePolicy Orchestrator 5.10.0 Service Pack 1 Update 4   We have installed the latest Update 4 on several customer on-premises EPO installation and the update works fine and without any problems. Key Considerations for Updating Trellix ePO 5.10 SP1 to the Latest Rollup 4 Check your ePO database size. Some Trellix SP or Rollup […]

Microsoft EDGE fails to Update from WSUS, from MSI-file or repair APPS because of GPO, 0x80070643, 1722

Microsoft EDGE fails to Update from WSUS, from MSI-file or repair APPS because of GPO, 0x80070643, 1722 Cause: GPO / EdgeUpdate Policies In this case, we have a GPO (Group Policy) created by or for a customer who uses Firefox as the default browser because a Citrix engineer advised them that this was the best […]

Outlook.exe, delay in receive and sending E-Mail in cached mode how to solve with GPO

    In the OLD KB-Nummer: 982697 MS explains……. (Now MS Learn…) 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 […]

MS SRV Disable IPv6 the correct way CVE-2024-38063

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 […]

Crowdstrike Falcon Sensor, Azure VM Repair paths

The procedures in this article describe methods you can use to attach an encrypted OS disk to a repair VM and then unlock that disk. After the disk is unlocked, you can repair it. As a final step, you can replae the OS disk on the original VM with this newly repaired version. Microsoft has […]