Posts

Error mounting ISO file - "Sorry, there was a problem mounting the file"

Recently, I've had problems using the built in functionality of Windows Explorer to mount ISO files as a virtual DVD drive.  When I tried to mount an iso, there was a long delay with the 'wait' cursor, and eventually I got an error dialog which said simply "Sorry, there was a problem mounting the file."  Subsequent attempts to mount an iso file (whether the same file or a different file) would immediately return the error, without delay.  
I searched far and wide online and could not find a solution that applied in my environment.  Eventually, I tried mounting the iso using the "Mount-DiskImage" powershell command in hopes of getting a more informative error message.  The error I got was:
Mount-DiskImage : A virtual disk support provider for the specified file was not found. 
Searching for that error message lead me to posts about problems installing a device driver.  Then, everything clicked...
Some time ago, we implemented some Device Installation Restr…

Data Sharing Service crashes on Windows Server 2016 - Event ID 7023

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While troubleshooting an issue recently on a Windows Server 2016 system, I noticed errors on the System event log about the Data Sharing Service crashing.


Searching online for more information about this service and why it might be failing, I came across a lot of people describing similar problems, but the only explanation and solution I found came from this December blog post by Microsoft Japan.    Google translate did a great job making the post understandable to me, but since the information doesn't seem to have been widely publicized I thought I'd share it here to help get the word out.

The Data Sharing Service fails due to a resource conflict with another service included in Server 2016, the User Access Logging Service.  Either one of these services alone will run without issue, but if one is already running and you try to start the other, it will fail.

According to an update to the blog post, Microsoft plans to resolve the issue in a future update to Server 2016, but …

Windows 10 Credential Guard breaks WiFi

Recently, I ran into an issue with computers running windows 10 that would not connect to our WPA2-Enterprise encrypted wifi network.  When it failed to connect, there was no indication of why, only the message "Can't connect to this network."  The computers were able to connect to unencrypted networks and networks using a Pre-shared key for WPA encryption without issue.

Checking the event logs on the RADIUS server to see why the comptuer failed to connect, there was no log entry for a connection attempt from the affected system.  The WLAN-Auto-Config log on the client listed a couple of errors, including Event ID 11006 and 12013, but other than showing that the failure reason was "Explicit EAP failure received", they didn't give much to go on:

Log Name:      Microsoft-Windows-WLAN-AutoConfig/Operational
Source:        Microsoft-Windows-WLAN-AutoConfig
Date:          8/15/2016 1:11:20 PM
Event ID:      11006
Task Category: MsmSecurity
Level:         Error
Keyword…

Configuring Bitlocker and TPM on Server 2012R2 Core

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I've just finished configuring Bitlocker on a new server running Server Core 2012R2 with a TPM key protector.  I had to piece together bits from a few sources online to accomplish this, so I will bring together in this one post all of the steps I ended up using.

Here's a high level overview of the steps required:

Check TPM statusEnable & activate TPM if neededTake ownership of TPMCreate Bitlocker recovery passwordBackup recovery password to Active DirectoryEnable Bitlocker using the TPM as the key protector
In order to do this, the server must have a TPM module installed.  Believe it or not, this is still not standard hardware for many servers.  For HP servers, a TPM add-on is available for about $50 as p/n 488069-B21.  If you do have to install a TPM, go into the BIOS and enable the TPM under the security settings, to save yourself some steps later.

Now comes the tricky part.  Powershell version 4 added some handy new cmdlets for managing the TPM.  Unfortunately, for some…

Viewing Windows Update logs in Windows 10

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For many years, dating back at least to Windows XP, Windows Update has kept a text format log in the Windows directory, which could provide useful information when troubleshooting update issues.  Beginning in Windows 10, this log file (C:\Windows\WindowsUpdate.log) Is no longer used.  If you look for it in the Windows directory, you'll see that the file is still there, but is only 275 bytes, compared to the 1-2MB log files of the past.  The contents of this file now explain that it isn't used anymore, and list a powershell command to get a readable windows update log:


As you can see, there is a simple solution in the form of a new powershell cmdlet.  Simply run "get-windowsupdatelog" in powershell, and wait.  You'll see various input and output files scroll by in the powershell window as it parses the new "ETW" (Event Tracing for Windows" formatted logs, located in "c:\windows\logs\windowsupdate\".  When the cmdlet finishes, it will creat…

Now Available: Remote Server Administration Tools for Windows 10

Throughout the latter portion of the Windows Insider program testing of Windows 10, and continuing on since the release of Windows 10 last month, one question has been very popular: Where is the Remote Server Administration Tools package for Windows 10?

Finally, the wait is over:
Download the Remote Server Administration Tools for Windows 10


No KMS Key in the VLSC for Windows 10 for OPEN License

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With the release of Windows 10, many IT workers are beginning to look into it and perhaps test it for use in their organizations.  When the time comes to set up KMS activation of the new OS however, those IT staff using Microsoft's OPEN Licensing may find that something is missing...

When I logged in to the Volume License Service Center recently to look up the KMS activation key for Windows 10 Enterprise, I was surprised to find that only Multiple Activation Keys (MAK) were listed.  Searching online, I came across this blog post from someone who ended up calling Volume Licensing support to get his KMS key, but with no explaination as to why.  After digging around a bit, I happened to come across an entry in the VLSC FAQ which explains the missing key.  
If you can't read that, it says: I am an Open Customer and do not see my KMS (Key Management Service) key displayed on VLSC. How can I get it? 
KMS keys are no longer pre-assigned to Open agreements as use of MAK (Multiple Activa…