Effective Windows update
and patch checking with PRTG


  • PRTG monitors Windows patches & updates in your network

  • PRTG notifies you in the event of faulty or incomplete updates

  • PRTG provides an overview via a centralized dashboard

  • PRTG comes with a built-in alarm for increased security and uses WMI, PowerShell, and SNMP

    PRTG frees up precious time by offering automated monitoring


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.






Update checker:
Greater software and operating system security

Software und Betriebssysteme werden kontinuierlich weiterentwickelt. Wöchentlich werden neue Schwachstellen ausfindig gemacht und korrigiert. Sicherheitslücken werden entdeckt und geschlossen. Vor allem sicherheitsrelevante Updates und Patches auf Windows-Systemen sollten zeitnah eingespielt werden, um gefährliche Einfallstore in Ihren Systemen zu schließen.

Ein professionelles Update- und Patch-Monitoring für Windows stellt sicher, dass alle im Einsatz befindlichen Betriebssysteme und Anwendungen auf dem neuesten Stand sind. Sie müssen die aktuelle Version nicht mehr manuell nachprüfen. Mit PRTG im Hintergrund wissen Sie, dass mit Ihren Windows Hosts alles seine Richtigkeit hat.

Mit PRTG können alle beruhigt arbeiten.



“The greatest advantage of PRTG? You get to rest easy.“

Steffen Ille, Bauhaus-University of Weimar, Germany


How Update checking
with PRTG works

A sensor scans Windows operating systems for their current version, then inquires online as to the most current version available. If the two do not match, the administrator will be notified as instructed or an update will be arranged.

An example: PRTG features the preinstalled Windows Updates Status (Powershell) Sensor so you can be sure your Windows is always up-to-date.

iWhat is a sensor?

In PRTG, “Sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)


How Update checking in PRTG looks like

Windows Updates Status
Powershell Sensor

This sensor tells you when the last update was performed on an individual device. It also displays the Windows updates that have already been installed and notifies you if updates are missing or critical updates have yet to be installed.

To the sensor

WMI Security
Center Sensor 

This sensor displays the update status of Windows Security Center. It will also send you a message if Windows Defender – the Windows virus scanner – is no longer up-to-date.

To the sensor

WSUS Statistics

The WSUS Statistics Sensor monitors the Windows Server Updates Services (WSUS) Server, or the server that distributes all Windows updates. It collects and consolidates various statistics on all your devices. You’ll see, for example, which computers still need updates or where errors have occurred. This sensor provides you with a total overview.

To the sensor


Trusted by 200.000 users
and recognized by industry analysts as a leader

“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

Read more reviews

“Software is absolutely perfect, Support is superior. Meets all needs and requirements, This is a must have solution if you are needing any form of monitoring.”

Read more reviews

“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

Read more reviews



Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.


Windows updates – or more? The flexible PRTG licensing model

Free update and patch checker

Free update and patch checker

Simply looking for a way to make sure your Windows system is always up-to-date? If so, then the free version of PRTG is for you. It comes with 100 sensors, the alarm, the reports function, and all the other features. Download PRTG, create the above-mentioned sensors, and get started with limited monitoring.

Comprehensive monitoring tool

Comprehensive monitoring tool

The advantage of our software? PRTG is a centralized tool for your entire network. Checking the status of your network, applications, bandwidth, and traffic has never been easier. Save time, effort, and lots of frustration. PRTG comes with a customizable alarm system that alerts you before noticeable disruptions or malfunctions make life difficult for your coworkers. See our prices.


Software patches and updates: The same thing?

Patch monitoring 

Patches are offered for operating systems and software. They are usually made available when an error is detected which must be fixed at once. Such errors often include security loopholes. Windows can offer several patches in one package. Each patch detected by the PRTG patch checker has a different version number.

Update monitoring 

Updates are also used to optimize programs. But unlike patches, they are scheduled in advance and do not take place at once. Updates (or “upgrades”) are offered when new features become available for a system or piece of software. They therefore upgrade and enhance programs. The program is updated and receives a new version number.


PRTG simplifies your day

Our monitoring software works for you and promptly notifies you of potential issues.
It frees you to concentrate on your day-to-day tasks with peace of mind.


PRTG saves time

With PRTG, you get one central monitoring tool for your servers and entire network. Enjoy a quick overview of your whole infrastructure via our dashboard and app.

PRTG saves worry

Customizing PRTG is a breeze. Getting started or switching from another network monitoring tool is easy thanks to the PRTG auto-discovery and pre-configured device templates.

PRTG saves money

80% of our customers report substantial or even exceptional cost savings in the area of network monitoring. The experience shows that the costs for licenses have paid for themselves within a matter of weeks.



No updates in sight? Here are some common causes – and consequences 

Too many devices in the network

Too many devices in the network

IT infrastructures have a way of expanding over the years. They deploy servers, routers, workstations, and other devices, most of which are made by different manufacturers. Because these devices are added to the network at different times, they often run on different versions of an operating system or on different systems altogether. What’s more, the same patch or update is not always required for every computer.

Errors during installations

Errors during installations

Like backups, many updates are performed at night to prevent them from disrupting a company’s daily business. However, if errors occur at night, they’re not always detected the next morning. An automatic update and patch checker keeps system administrators in the know.

Security loopholes

Security loopholes

On the other hand, without an update and patch checker, security loopholes can quickly crop up in the network. Here, firewalls and antivirus software often provide for little or no defense. Update and patch monitoring therefore helps administrators keep their systems secure. Outdated versions are a real security risk.


4 good reasons
to choose PRTG as your update checking tool


iWhat is a sensor?

In PRTG, “Sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)

An enhanced overview

An enhanced overview

Enjoy a quick and easy overview of the status of your software and operating system, as well as any updates and patches which were successful or failed.


Automatic notifications

Automatic notifications

Should an update fail or security patches become available, you will be notified immediately, wherever you are.


Automation for a lighter workload

Automation for a lighter workload

By relying on the PRTG sensors and notifications, you no longer need to take the time to manually check each and every case.


Increased security

Increased security

Thanks to the additional safeguarding of your update process, you can ensure critical weak spots are eliminated as quickly as possible.



Over 95% of our customers recommend PRTG


Paessler AG worldwide trialled PRTG in over 600 IT departments.
The aim was to tune the network monitoring software closer to the needs of the administrators.
The result of the survey: over 95% of the participants would recommend PRTG - or already had.

Recommend PRTG


Your Network at a glance
– even on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!




You can scan and monitor this with your PRTG

Log Monitoring

Keep an eye on all the syslog and Windows Event Log messages.

More information

Mail server monitoring

As an administrator, it’s your job to make sure the network runs smoothly. With PRTG, you’ll keep a constant eye on all your servers – and be promptly notified in the event of malfunctions.

More information



PRTG comes with a variety of built-in CloudWatch sensors to monitor Amazon Cloud and all AWS services.


More information


A SharePoint Server malfunction can have serious consequences. PRTG monitoring helps you solve problems faster and keep SharePoint stable.

More information

PRTG: The swiss army knife for sys admins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • New REST API Sensor: Monitor almost everything that provides XML or JSON


German quality

Free Download
  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime


Made in Germany: The PRTG Network Monitoring Tool is the fruit of an engaged team. The company was founded by Dirk Paessler. The Paessler AG headquarters are located in the city of Nuremberg, in the heart of Germany. We combine typical German virtues such as high quality standards, industriousness, and commitment with international, cosmopolitan flair. Read more about our firm here. By the way: We are regularly looking for new recruits.

Case Studies: Airports, utility companies, banks, colleges, hospitals: PRTG is present in every industry. For each of our customers, business and organizational processes depend on the proper functioning of the network infrastructure. The PRTG customer satisfaction is close to 100%. Read in our case studies how our customers use PRTG.

Product tests: It goes without saying that we are convinced by the quality of PRTG. But what about the others? PRTG has always performed extremely well in tests. PRTG user “LanLine” sums it up best: “PRTG was already good several years ago, and has gotten better from version to version ever since.” Such has been our steadfast and sincere goal. Read more about monitoring software product tests and comparisons here.

Support: Our support team works hard every day to help customers solve their monitoring problems. Our goal is to resolve all inquiries within 24 hours (on business days). We've drafted a comprehensive manual and built up an extensive knowledge base featuring videos, webinars, and FAQs. All support, of course, is also included!

Getting started is easy: The trial version is free, which means you can try our monitoring tool risk-free. To switch to another version of PRTG, simply search for an appropriate license. You can upgrade any time you like.




Network Monitoring Software - Version (April 21st, 2020)


Download for Windows and hosted version available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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