Tag: RPC

Windows Server 2025 Preview (Build: Canary 26052)

I had some time to check out the new version of Server 2025.

For the full upcomming features check: https://ignite.microsoft.com/en-US/sessions/f3901190-1154-45e3-9726-d2498c26c2c9?source=sessions

Download Server 2025 Preview: https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewserver

Server 2025 will come with a lot of features (My Top 20+):

  • General – Server 2022 upgrade to .vNext (Controled bij GPO)
  • Hot Patching (Arc Enabled, Monthly Subscription)
  • Active Directory – 32k page
  • Active Directory – Numa
  • Active Directory – LDAP TLS 1.3
  • Active Directory – Improved Security for Confidential Attributes
  • Active Directory – Active Directory LDAP prefers Encryption bij Default
  • Active Directory – Kerberos Support for AES/SHA256/384
  • Active Directory – Changes to Default behavior of legacy SAM RPC Spassword change methods
  • Active Directory – Kerberos en KPINT Support cryptographic agility
  • Active Directory – New AD Forest en Domein Level (Minimal Server 2016 requirement)
  • Storage – NVME 70%/90% peformance increase
  • File Server – SMB over Internet (Quick Protocol)
  • File Server – More Control over SLTM
  • File Server – SMB Limitor (Enabeld bij Default)
  • File Server – Signing by Default
  • File Server – Minimum version SMB
  • File Server – More Secure Bij Default (Netbios disabled bij default)
  • RDS – M365 Apps stil supported for every Windows Server release 2-3 years
  • Finance – General support and Pay-as-you-go Support

Need to find some time to dig in

Handy link: https://techcommunity.microsoft.com/t5/windows-server-insiders/announcing-windows-server-preview-build-26040/m-p/4040858

Imported Hotfixes for Windows 2008 R2 Clustering

Imported Hotfixes for Windows 2008 R2 Clustering:

NTFS.sys

2814923          “0x0000009E” Stop error and disk volumes cannot be brought online on a Windows Server 2008 R2-based failover cluster
http://support.microsoft.com/kb/2814923/EN-US

MPIO

2754704          A hotfix is available that provides a mechanism for DSM to notify MPIO that a particular path is back to online in Windows Server 2008 and Windows Server 2008 R2
http://support.microsoft.com/kb/2754704/EN-US

storport.sys

2780444          “0x0000012E” Stop error occurs when an application sends a 12-byte SCSI opcode to an iSCSI target in Windows Vista SP2, Windows Server 2008 SP2, Windows 7 SP1, and Windows Server 2008 R2 SP1
http://support.microsoft.com/kb/2780444/EN-US

msiscsi

2684681          Iscsicpl.exe process stops responding when you try to reconnect a storage device to a computer that is running Windows Vista, Windows Server 2008, Windows 7, or Windows Server 2008 R2
http://support.microsoft.com/kb/2684681/EN-US

rdbss

2670567 “0x000000027” Stop error when you copy a file from a redirected folder in Windows 7 or in Windows Server 2008 R2
http://support.microsoft.com/kb/2670567/EN-US

Kernel

2805853          “0x0000008E” Stop error on a computer that is running Windows 7 or Windows Server 2008 R2
http://support.microsoft.com/kb/2805853/EN-US

RPCSS

2756999 Handle leak occurs on a COM client that is running on a Windows 7 or Windows Server 2008 R2 computer
http://support.microsoft.com/kb/2756999/EN-US

Mrxsmb10

2727324 Computer stops responding after you connect to an SMB 1 server in Windows 7 or in Windows Server 2008 R2
http://support.microsoft.com/kb/2727324/EN-US

Mrxsmb20

2778834          File becomes corrupted when you try to overwrite the file while it is opened by another user on a computer that is running Windows 7 or Windows Server 2008 R2
http://support.microsoft.com/kb/2778834/EN-US

TCPIP

2519644          Stop code in the tcpip.sys driver on a computer that is running Windows Server 2008 R2: 0x000000D1
http://support.microsoft.com/kb/2519644/EN-US

2524478          The network location profile changes from “Domain” to “Public” in Windows 7 or in Windows Server 2008 R2
http://support.microsoft.com/kb/2524478/EN-US

CPU usage is high when you use RPC over HTTP protocol in Windows 8.1 or Windows Server 2012 R2

Consider the following scenario that takes Microsoft Exchange Server 2013 as an example:

  • The Mailbox server role is enabled in Exchange Server 2013.
  • Exchange mailboxes use extended MAPI to communicate with the Exchange Server.
  • The extended MAPI uses Microsoft RPC over HTTP (remote procedure call over HTTP) protocol.
  • Many clients (such as mobile devices) are dropping connections to the Exchange Server.

In this scenario, the CPU usage on the Exchange server may reach 100 percent.\

Hotfix: https://support.microsoft.com/en-us/hotfix/kbhotfix?kbnum=3041832&kbln=en-US

Exchange Online RPC over HTTP Deprecation(Outlook 2007) October 31 2017

Status: Active

Action Required by: October 31, 2017 at 5:59 PM UTC

Details: On October 31st, 2017, Exchange Online mailboxes in Office 365 will require connections from Outlook for Windows use MAPI over HTTP, our new method of connectivity and transport between Outlook for Windows and Exchange. In May of 2014, Microsoft introduced MAPI over HTTP as a replacement for RPC over HTTP. RPC over HTTP was a legacy connection protocol that is being deprecated from Exchange Online. Beginning October 31, 2017, Outlook for Windows clients using RPC over HTTP will be unable to access their Exchange Online mailbox. The necessary action depends on the version of Outlook in use in your organization. If you are using Outlook 2007 or earlier, you need to upgrade. Outlook 2007 does not contain support for the MAPI/HTTP protocol. We encourage you to update to the Office 365 ProPlus subscription, or access Outlook via the web browser (which is included in your current subscription plan). Outlook 2010-2016 customers will need to ensure their version of Outlook for Windows is set up to support MAPI/HTTP. At a minimum, you should ensure you have installed the December 2015 update. Lastly, ensure your Outlook clients are not using a registry key to block MAPI/HTTP.

Message Center: MC85988 – Potential service disruption for Outlook for Windows users

Posted: November 16, 2016

Additional Information: KB3201590: RPC over HTTP deprecated in Office 365 on October 31, 2017

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