Exchange-1

Exchange 2013 – Powershell No Mapping Unicode WinRM

Microsoft released the Cumulative Update 11 for Exchange 2013 and Exchange 2016 CU1 in December 2015. With these new packages, they changed the behavior of Exchange Management Shell, (Exchange Powershell).

Prior to 2013 CU11 and 2016 CU1, when you start the EMS, it will connect by default to the local Exchange Server. But with CU11, Exchange Powershell will be proxy to the server where the user’s mailbox is located. It means that when you start the EMS console, it will probably try to connect to another server.

When all your servers are up to date, in some circonstances, you can get an error when launching the EMS: “No mapping for the Unicode character exists in the target”:

Mapping Unicode error

Mapping Unicode error

If you get this error, do not panic and stay calm :). You can find some posts where you need to rebuild the powershell virtual directory, but do not do this! Let’s see how to resolve this issue easily.

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SCCM

SCCM 2012 – Software Update failed 0x800f0821

When you are deploying a “big” software update like KB2919355, with System Center Configuration Manager, you can have the error code 0x800f0821 on some computers.

The computer receives the update, downloads it and starts to install it but the installation will fail.

Installation failed 0x800f0821

Installation failed 0x800f0821

This error is raised because the execution time was reached. Depends on computers and servers, you may or not have this error on all SCCM clients.

Let’s see how to change the configuration in SCCM.

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WindowsServer

Server 2012 – IPAM failed on provisioning

If you try to setup IPAM, you can get an error during the provisioning IPAM server step.

“Provisioning IPAM has failed. Check inner exception for more details. Some or all identity references could not be translated”

IPAM Provisioning failed

IPAM Provisioning failed

This error is raised because you try to provision it on a Domain Controller. By design IPAM can not be installed on a DC.
On Technet, Microsoft writes:

An IPAM server is a domain member computer.

ImportantImportant
You cannot install the IPAM feature on an Active Directory domain controller.

More

You could get more information here.

Exchange-1

Exchange 2013 – VSS backup does not clean logs 800423f3

In Exchange Server 2013, I got one backup issue with Veeam Backup, but the problem occurs with all VSS backup solutions. I was able to reproduce the issue with Windows Server backup role.

In fact, when I checked the mailbox database folder, all transactions logs were not deleted after the backup, even if the backup is reported as successful.

VSS Backup logs not deleted

VSS Backup logs not deleted

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WindowsServer

Server – Internet Explorer GPO not applied

With Active Directory, you can deploy some Internet Explorer configuration using Group Policy (GPO). But sometime, settings for Internet Explorer are not modified, even if the GPO is correctly applied.

This behavior is not a bug, it’s a feature 🙂 When IE Security is enabled, GPO can’t change configuration for Internet Explorer.
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WindowsServer

DNS – Remove WPAD Filtering

When you want to deploy an autodiscover proxy configuration for your clients, you can use WPAD with DNS.
However Windows Server DNS can reply non-existent domain for an wpad domain name request.

DNS WPAD Filtering

WPAD record in DNS


DNS WPAD Filtering

Non Existant domain


This behavior is by default and can be decomposed in two parts:

  • If WPAD configuration is already in place when you install the DNS server, no action is required.
  • When you want to set up a new WPAD configuration after DNS installation, you need to edit the block list on all your DNS servers.

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SCCM

SCCM 2012 – Application Catalog prompts Credentials

With System Center Configuration Manager 2012, there is a new  functionality: Application Catalog. Using Application Catalog, you can deploy an application on user collection, and all users can use this web page to install or request an application.

Credentials prompt

To launch the Application Catalog, you can use the existing link on Software Center:

Application Catalog link Software center

Link Software center

Depends on your system configuration, Internet Explorer can prompt for your login / password. Even if you are in your domain.

Application Catalog Prompt

Credential Prompt

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SCCM

SCCM 2012 – WsusPool crashes

During the migration phase of SCCM 2007 clients to SCCM 2012 infrastructure, I had an issue with the Software Update Point: a lot of computers not reported their Software Update compliance and didn’t evaluated any new software updates.

After a troubleshooting, in the WUAhandler.log on client side, there was this error:

OnSearchComplete - Failed to end search job. Error = 0x80244022.
Scan failed with error = 0x80244022.
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