The Core Technologies Blog

Professional Software for Windows Services / 24×7 Operation


Windows Server 2016 Test Drive: We’re Fully Compatible

Windows Server 2016

Windows Server 2016 was quietly released on October 12th. This new operating system extends Microsoft’s reach into modern cloud technologies (with Nano Server and Docker) and introduces a host of under-the-hood improvements in security, networking and automation. This Technet article digs into the details.

Anything New for Window Services?

No — at least nothing that we could find.

Unlike Windows 8.1 or Windows Server 2008 R2, Windows Server 2016 was not accompanied by an update to the underlying Services API. There are no new capabilities available to applications built on top of those mission-critical functions supporting 24×7 operation.

Indeed, the reliable Services Control Panel application remains the same as we saw in the previous generation, Server 2012 R2:


Services.msc on Windows Server 2016

Nevertheless, we were still very curious to see if any of our applications would run into trouble on Microsoft’s latest and greatest!

AlwaysUp Windows Services Work Well on Server 2016

We easily installed AlwaysUp 9.7 on our Server 2016 test machine. And with no major changes for Windows Services, it was no surprise to see AlwaysUp running applications like Dropbox, Box Sync and Skype reliably in the background:

AlwaysUp running Skype on Windows Server 2016

Service Protector Monitors your Important Server 2016 Services

Our team encountered zero issues installing, running and evaluating Service Protector 5.3 over a two week period. Advanced features such as CPU hog detection, scheduled restarts and email alerts all operated without a hitch.

Service Protector on Windows Server 2016

Our Free Utilities are Compatible with Windows Server 2016 Too

Thankfully Service Trigger Editor, ServiceTray, Switch to Session 0 and all our other products performed flawlessly on the new OS as well. No problems were found.

Free Applications on Server 2016

But Server 2016 Contains a Bug: No Keyboard and Mouse in Session 0

We discovered this problem when we tested Windows 10 last year, and it now appears to have taken hold on Microsoft’s Server operating systems as well. The folks in Redmond are aware of the bug and claim to have a fix but several of us who rely on Windows Services have been impatiently awaiting a resolution for over a year now. 🙁

 

So to sum up, we are pleased to report that our entire suite of applications is compatible with Windows Server 2016. Best of luck running Server 2016 in your business!

 

Additional Windows Server 2016 Information

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Windows Service Protector 5.3 Monitors Multiple CPUs

New Version: Windows Service Protector 5.3 Monitors Multiple CPUs

If you are responsible for keeping a CPU-hogging Windows Service running all the time, then we have some great news! Service Protector, our time-saving administrative tool that helps any Windows Service achieve 100% uptime, is now able to monitor processor use across all your server’s CPUs.

Previous versions of Service Protector would only monitor a single CPU/Core. This approach fit with the vast majority of today’s popular windows services that run entirely on one CPU, but it was inadequate for newer, performance-hungry services designed to make use of all a server’s CPUs. This release addresses that deficiency by detecting “runaway” services consuming too many cycles across all the CPUs.

How to Activate Windows Service “CPU Hog” Detection Across All Processors

To identify and automatically restart a misbehaving windows service that ties up multiple CPUs, simply check the Average over all CPUs (instead of only one) box when configuring Service Protector’s Monitor tab:

With the above setting, a service running on a 4-CPU machine that consumes over 95% of all processing power would be automatically restarted by Service Protector.

Enjoy!

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How do I Move my AlwaysUp/Windows Services to a New Server?

move AlwaysUp to a new Server

To transfer your AlwaysUp Windows Services to a new computer, please follow this 4-step process:

1. Export your AlwaysUp Application(s) from your Existing Server

If you don’t want to move any applications/services from your old server, go straight to step 2.

Otherwise, to export each of your AlwaysUp applications to a XML file:

  1. Select Application > Export All… to summon the Browse For Folder selector:

  2. Choose the folder where you would like the XML files to be saved.

  3. Copy the XML files to a flash drive, or make them available on a network share that is accessible from your new PC. You will need them in step 3.

2. Download & Install AlwaysUp on your New Server

On your new PC, download AlwaysUp from our web site and follow these step-by-step instructions to install it.

3. Import your AlwaysUp Application(s) into your New Installation

If you exported applications in step 1, now is the time to import each of them into your new installation. On your new PC:

  1. Select Application > Import…

  2. Next, select the XML file representing the service you wish to restore. This will launch the Add Application window, already populated with the details of your service.

  3. Review your application’s settings. Please pay special attention to the path to your main executable or script on the General tab (or any other file locations configured for your service) which may be different on this new PC.

    Note that you may have to re-enter your Windows password on the Logon tab because that password was not exported along with your other settings (to enforce security standards).

  4. Click the Save>> button to record this service.

Please repeat these steps for each of the applications/services you wish to restore.

4. Register AlwaysUp on your New Server

Chances are that the registration code assigned to your old PC won’t work on the new computer. You’ll need to:

  1. Revoke your old license assignment;
  2. Assign your license to your new installation.

That’s it! Best of luck with your new machine!

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Why does my Application have Trouble Reading the Registry?

Registry trouble with windows service

The Problem

Tod Daniels of d’innovative reported a strange problem. His JScript file (run with Microsoft’s CSCRIPT.EXE) started fine from his desktop but failed when run as a windows service with AlwaysUp.

By troubleshooting the situation from the command line, Tod was able to narrow the problem down to a problem when reading from the registry. Specifically:

  • regedit /e F:\test1.reg “HKEY_LOCAL_MACHINE\Software\Broadcom\BACS” run outside AlwaysUp produces a file containing the registry export.
  • regedit /e F:\test2.reg “HKEY_LOCAL_MACHINE\Software\Broadcom\BACS” run inside an AlwaysUp CMD session does not produce a file.

Both commands were run in the same user account, so why the different results?

The Solution

The discrepancy is due to the different views of the registry presented to 32-bit and 64-bit applications.

Most modern versions of Windows are 64-bit. All the major applications and supporting DLLs distributed with the OS are 64-bit. To ensure that older 32-bit applications continue to run fine on these new operating systems, Microsoft engages in some “creative trickery”:

  • 32-bit applications see a 32-bit version of the System32 Folder

    Even though the Windows System32 folder (typically, C:\Windows\System32) is stocked with 64-bit applications, a 32-bit application has that folder “mapped” to a counterpart (C:\Windows\System32\Wow64) filled with 32-bit versions instead. So when a 32-bit application runs the “DIR” or “REGEDIT” commands, it is actually invoking the 32-bit version in the Wow64 folder. This silent mapping ensures compatibility when a 32-bit application invokes one of those standard Windows utilities.

    AlwaysUp is a 32-bit application and is constrained by this behavior. When we’re troubleshooting, the command prompt is launching the 32-bit version of regedit.

  • 64-bit applications work with a (slightly) different view of the Registry

    In the 64-bit operating systems, some registry keys actually have a 32-bit version and a 64-bit version! One such key is HKLM\Software. 32-bit applications can write to this key normally, however the changes show up under HKLM\Software\Wow64 instead. A 64-bit application can see both versions of the keys and can choose which version to access.

Now Tod is using Windows Server 2012 R2 which is 64-bit. Our “a-ha” moment came when we noticed that this key exists:

HKEY_LOCAL_MACHINE\Software\Broadcom\BACS

but the corresponding 32-bit key does not:

HKEY_LOCAL_MACHINE\Software\WOW6432Node\Broadcom\BACS

This discrepancy means that 64-bit applications can access HKEY_LOCAL_MACHINE\Software\Broadcom\BACS while 32-bit applications cannot see a registry entry with that same name.

Tod was able to start the 64-bit version of regedit from AlwaysUp by exploiting another bit of Microsoft trickery — the Sysnative folder. This is the full path that enabled regedit to find the Broadcom key:

C:\Windows\Sysnative\regedit /e F:\test1.reg “HKEY_LOCAL_MACHINE\Software\Broadcom\BACS”

Ultimately he was able to launch the 64-bit version of CSCRIPT from the same path and his application is now functioning as expected as a Windows Service!

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