After performing an in-place upgrade on a Windows machine, you will find a WINDOWS.OLD folder in the root of C:. This folder will have a backup of your old program files, appdata and Windows folder… just in case you need to revert back or recover something that might have been lost during the upgrade. When you try to delete it though you are told you don’t have permissions. Just a small point here, it is generally not recommended to do in-place upgrades on servers. In fact there are some products (e.g. Exchange, ConfigMgr) that explicitly state they do not support upgrading the Operating System. There is of course a difference between “what works” and “what is supported”, but we do suggest where possible you do a clean Server install and migrate your application to the new server. Anyway, let’s assume you’ve understand all the risks and have done a successful in-place upgrade, you now find the old WINDOWS.OLD folder of several GB in size sitting there. If all is well, then you might as well just delete it.

SOLUTION

On Desktop OS version, you can just use the disk cleanup tool to remove it, but that is not available (by default) on Servers, so there are a couple of approaches.

Command line tools to take ownership and delete the folder. Make sure to “run as administrator”

How can I delete the windows.old from an upgraded Windows Server?

For a client OS that’s upgraded, the Disk Cleanup utility can be used to delete the very large windows.old folder containing the old OS. This isn’t available on a server OS without installing the Desktop Experience feature.

To delete, it is necessary to take ownership of the folder, give administrators full control, then delete. This can be done with the commands below:

•  takeown /F c:\Windows.old\* /R /A /D Y
•  cacls c:\Windows.old\*.* /T /grant administrators:F
•  rmdir /S /Q c:\Windows.old

Or you can add the “Desktop” features to provide the Disk Cleanup tool:

Step By Step Guide to Enabling “Disk Cleanup Utility”

1. Open The Roles and Features Wizard

To open the roes and feauture wizard. Lauch the “server manager” by pressing the Windows key

and clicking on the server manage please see Screenshot as shown.

Personally, the command line option is less messy and saves having to add features to your server that don’t really need to be there.

2. Click on Add role and Feature

Click on add role and feture to launch the add role and feature wizard.

3.  Choose installation Type

Choose rolebase or feature based installation to install to local machine.

4. Click Next all the way to features

Click “next” all the way to features. Locate “User Interface and Infrastructure”. Click on “Desktop Experience”

and install additional required feature.

5.  Proceed with the installation and Reboot

Make it sure that you reboot the system

6.  Verify that the Utility is indeed installed

Ready to run diskcleanup. See screen shot below.

Disk Cleanup in Action

Below is a sample snapshot of disk cleanup in action.

In a rare step, Microsoft published a patch for Windows XP, Windows Server 2003 and Windows 8

Users of old Windows systems can now download a patch to protect them from this week’s massive ransomware attack.

In a rare step, Microsoft published a patch for Windows XP, Windows Server 2003 and Windows 8 — all of them operating systems for which it no longer provides mainstream support.

Users can download and find more information about the patches in Microsoft’s blog post about Friday’s attack from the WannaCry ransomware.

The ransomware, which has spread globally, has been infecting computers by exploiting a Windows vulnerability involving the Server Message Block protocol, a file-sharing feature.

Computers infected with WannaCry will have their data encrypted, and display a ransom note demanding $300 or $600 in bitcoin to free the files.

Fortunately, Windows 10 customers were not targeted in Friday’s attack. In March, Microsoft patched the vulnerability that the ransomware exploits — but only for newer Windows systems. That’s left older Windows machines, or those users who failed to patch newer machines, vulnerable to Friday’s attack.

Researchers originally believed the ransomware was spread through attachments in email phishing campaigns. That no longer appears to be the case.

Infection attempts from the WannaCry ransomware.

Once a vulnerable PC becomes infected, the computer will attempt to spread to other machines over the local network as well as over the internet. The ransomware will specifically scan for unpatched machines that have the Server Message Block vulnerability exposed.

Businesses can prevent this by disabling the Server Message Block protocol in vulnerable PCs. They can also use a firewall to block unrecognized internet traffic from accessing the networking ports the Server Message Block uses.

Fortunately, Friday’s ransomware attack may have been contained. A security researcher who goes by the name MalwareTech has activated a sort of kill-switch in WannaCry that stops it from spreading.

As a result, over 100,000 new infections were prevented, according to U.K.’s National Cyber Security Centre. But experts also warn that WannaCry’s developers may be working on other versions that won’t be easy to disable.

“It’s very important everyone understands that all they (the hackers) need to do is change some code and start again. Patch your systems now!” MalwareTech tweeted.

Unfortunately, the kill-switch’s activation will provide no relief to existing victims. The ransomware will persist on systems already infected.

Friday’s ransomware attack appears to have spread mainly in Europe and Asia, with Russia among those nations hardest hit, according to security researchers.

Security experts are advising victims to wait before paying the ransom. It’s possible that researchers will develop a free solution that can remove the infection.

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Symantec has recently become aware of a medium vulnerability in older versions of the server agent. The latest version addresses this vulnerability in new installations and was released February 15th, 2017. Server agents that are not already upgraded will be identified in the SEP SBE cloud management console starting on March 8th. A manual upgrade will be required to ensure you have the latest protection.