• Company
    • About Us
    • Case Studies
    • Press Center
    • Events
    • Careers
    • Blog
    • Contact us
  • Login
 
  • English
    • Deutsch
    • Español
    • Français
    • Italiano
    • Português
Paessler
                    - The Monitoring Experts
  • Products
    • Paessler PRTG
      Paessler PRTGMonitor your whole IT infrastructure
      • PRTG Network Monitor
      • PRTG Enterprise Monitor
      • PRTG Hosted Monitor
      • PRTG extensionsExtensions for Paessler PRTGExtend your monitoring to a new level
    • Icon Features
      FeaturesExplore all monitoring features
      • Maps & dashboards
      • Alerts & notifications
      • Multiple user interfaces
      • Distributed monitoring
      • Customizable reporting
  • Solutions
    • Industries
      IndustriesMonitor various industry sectors
      • Industrial
      • Healthcare
      • Data Center
      • Education
      • Finance
      • Government
    • IT Topics
      IT TopicsMonitor all areas of IT
      • Network Monitoring
      • Bandwidth Monitoring
      • SNMP Monitor
      • Network Mapping
      • WiFi Monitoring
      • Server Monitoring
  • Pricing
  • Resources
    • Getting Started
      Getting StartedModules for self-paced learning
    • How-to Guides
      How-to GuidesGet the most out of PRTG
    • Videos & Webinars
      Videos & WebinarsLearn from Paessler experts
    • IT  Knowledge
      IT KnowledgeExpand your IT knowledge
    • PRTG Manual
      PRTG ManualFull documentation
    • Knowledge Base
      Knowledge BaseShare community knowledge
    • PRTG Sensor Hub
      PRTG Sensor HubGet sensors, scripts & templates
    • Trainings
      PRTG TrainingLearn how to work with PRTG
  • Partners
    • icon star
      New Partners and MSPBecome a new partner or MSP
    • icon partner
      Partner PortalLog in to your partner account
    • icon search
      Find a PartnerFind partners selling Paessler products
    • icon technology
      Technology AlliancesSee Paessler technology partnerships
  • Company
    • About Us
    • Case Studies
    • Press Center
    • Events
    • Careers
    • Blog
    • Contact us
  • Login
  • English
    • Deutsch
    • Español
    • Français
    • Italiano
    • Português
  • Get a quote
  • Free trial
  1. Home>
  2. IT Topics>
  3. Network>
  4. Downtime Monitoring
PRTG Logo

Downtime Monitoring with PRTG

Ensure 99.999% uptime of your network round the clock

  • Use real-time alerts to immediately detect devices which are down
  • Optimize online services downtime & website availability
  • Track performance trends & network downtime with historical data
Free download
product overview

Our users give top ratings for monitoring with Paessler PRTG

Gartner peer insights
spiceworks
Capterra
G2
Trustpilot

PRTG downtime monitoring: What you will find on this page

Table of content
  • How you solve 4 common downtime causes with PRTG
  • What downtime monitoring looks like in PRTG
  • Prevent downtime & enhance network performance with the PRTG downtime monitoring tool
  • PRTG is downtime monitoring software... but also so much more
  • Monitor downtime: FAQ

 

PRTG makes downtime monitoring as easy as it gets

Custom alerts and data visualization let you quickly identify and prevent all kinds of network downtime issues.

Free download
PRODUCT OVERVIEW

Don’t let your network let you down: How you solve 4 common downtime causes with PRTG

Unscheduled downtime is not only annoying but can also have a negative impact on your business if left unattended. That’s why it’s so important to understand the root cause of an outage. Only then can you develop successful monitoring strategies. Paessler PRTG is your all-in-one network monitoring tool to address different downtime issues.

Icon Warning

Locate hardware defects

Every system administrator knows that hardware components like CPUs, RAM, and routers are frequent culprits of downtime.

PRTG provides you with different sensors like the SNMP CPU Load sensor, the SNMP Memory sensor, or the SNMP Hardware Status sensor, so you can quickly identify and fix hardware issues.

Icon Protection

Identify cybersecurity threats

Network attacks, for example DDoS, malware, or ransomware, are unfortunately regular events that can cause some serious downtime if you don’t detect them in time.

Deploying the File sensor to check your system files for suspicious changes, the SNMP Traffic sensor to recognize unusual bandwidth activity, or the SSL Certificate sensor to check if your certificates are up to date, help you detect and respond to threats effectively.

Icon Fire Truck

Quickly fix storage failures

Full storage disks are not only incredibly annoying and slow down work processes, they can also lead to unexpected infrastructure downtime.

Monitoring storage disks with the WMI Disk Health or WMI HDD Health sensors, or any other dedicated PRTG sensor to monitor downtime gives you the ability to intervene early and prevent capacity issues.

Icon Boost

Troubleshoot app errors

We all know that faulty applications, especially critical ones like databases or web servers, can cause significant downtime.

To make sure this doesn’t happen to you, PRTG offers a number of dedicated database, event log, and web server sensors for easy integration. With their help, you can easily prevent issues and maintain best user experience.

What downtime monitoring looks like in PRTG

Diagnose network issues by continuously tracking the downtime of your servers, routers, switches, and other devices. Show hardware failures, network security threats, storage issues, application malfunctions, and other key metrics in real time. Visualize monitoring data in clear graphs and dashboards to identify problems more easily. Gain the visibility you need to troubleshoot and prevent downtime.

PRTG Screenshot device tree view

Device tree view of the complete monitoring setup

PRTG screenshot map entire it infrastructure

Custom PRTG dashboard for keeping an eye on the entire IT infrastructure

PRTG screenshot graph live data traffic

Live traffic data graph in PRTG

 

Start monitoring downtime with PRTG and see how it can make your network more reliable and your job easier

Free download
PRODUCT OVERVIEW

IT experts agree: Paessler PRTG is a great solution for IT infrastructure monitoring

PCMag

“All-around winning
 network monitor”

IT Brief

“The real beauty of PRTG is the endless possibilities it offers”

ITPro

“PRTG Network Monitor 
is very hard to beat”

3 reasons why to choose PRTG as your downtime monitoring tool

Troubleshooting will probably always be a part of your daily tasks. But an even more important goal is the prevention of downtime so you can keep your business up and running. Monitoring potential downtime culprits with PRTG gives you the power to proactively improve network performance while simultaneously reducing downtime.

Icon Alarm

Receive downtime alerts and notifications

PRTG detects network anomalies, application failures, or bandwidth bottlenecks in real time.

Acting as a downtime notification system, your monitoring software immediately alerts you via SMS, email, push notification, Slack message, and more when the thresholds you configure are exceeded and sends notifications to the right teams for a quick resolution.

Icon Sheet

Customize reporting to fit your needs

Do you need customized reports of your monitoring data for your different stakeholders? With PRTG’s powerful reporting system, you can show updates on your network, device, or service downtimes exactly the way you need them.

Thanks to customizable rules and a powerful API integration for even more customization, all decisions can be based on data.

Icon Search

Take a closer look at your historical data

We all want to make informed decisions when it comes to our work. To make those decisions, you need data, lots and lots of reliable data.

That you don’t need to dig through all the data yourself, PRTG comes with historic data reports for every sensor you deploy – an easy way to increase the performance of your network significantly.

Explore our preconfigured PRTG sensors for Downtime Monitoring

PRTG comes with more than 250 native sensor types for monitoring your entire on-premises, cloud, and hybrid cloud environment out of the box. Check out some examples below!

SNMP Hardware Status

The SNMP Hardware Status sensor monitors the status of a server's hardware component. It can show the following:

  • Number of errors
  • Hardware component status
SNMP Hardware Status
SNMP Hardware Status

File

The File sensor monitors a file located on the local disk on the probe system, parent device, or a file that is accessible via Server Message Block (SMB). It can show the following:

  • File size
  • Time since the last modification of a file
File
File

SSL Certificate

The SSL Certificate sensor monitors the certificate of a Secure Sockets Layer (SSL)/Transport Layer Security (TLS) secured connection. It can show the following:

  • If the common name or subject-alternative names match the host address or SNI
  • Days to expiration
  • Public key length
  • If the certificate has been revoked and if it is trusted as root authority
  • If a self-signed certificate is used
SSL Certificate
SSL Certificate

WMI Disk Health

The WMI Disk Health sensor monitors the health of a physical disk on a Windows system. It can show the following:

  • Maximum flush latency
  • Health status
  • Operational status
  • Maximum read and write latency
WMI Disk Health
WMI Disk Health

See the PRTG Manual for a list of all available sensor types.

Find the root cause of the problem with our PRTG downtime monitoring solution

Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.

Free download
PRODUCT OVERVIEW

PRTG is compatible with all major vendors, products, and systems

compatible with all major vendors, products, and systems

PRTG is downtime monitoring software... but also so much more

PRTG is not only a downtime monitor, but also offers a wide range of monitoring features for you to improve your overall network management, such as server monitoring, website monitoring, or network traffic analysis. The convenient auto-discovery feature, which takes care of the setup of your monitoring environment after the quick and easy installation, is just one of many helpful functionalities.

Icon maps

Use detailed monitoring dashboards

The best dashboards are those that show you important data immediately. But setting up your own dashboards in a new monitoring environment is often time-consuming.

To save you valuable time, PRTG provides a drag-and-drop map editor for creating network maps and dashboards with detailed overviews of your network’s health in no time.

Icon Plus

Streamline combined IT/OT operations

Tired of using one software for OT monitoring and another for IT infrastructure monitoring? With PRTG, your monitoring operations are ready for the future.

With IT and OT network monitoring in one application, you not only save time and resources. You can also check the status of all your devices from a single pane of glass.

Icon Eye

Keep an eye on your bandwidth

PRTG excels at bandwidth monitoring thanks to its numerous sensors that track all aspects of bandwidth usage.

Whether you want to know how good the connection to your remote data centers is or how fast you can access the cloud, you will always have the latest data sets at your fingertips to manage your network traffic effectively.r fingertips to manage your network traffic effectively.

”Adopting PRTG has been like going from being in the dark to being in the light. Before, we had limited visibility into what was happening in the infrastructure and in the network. Now, however, thanks to the comprehensive dashboard and real-time notifications, we receive constant updates on the status of facilities and services, and our way of working has gone from passive to proactive.”

Luca Meneghesso, Senior IT infrastructure and Security Specialist
Banca Profilo

”GESAC increasingly focuses on innovation to improve the quality of services offered and the experience of passengers handled every day by Naples Airport. Thanks to PRTG, we finally have unified, automatic, and continuous monitoring of the airport network and can guarantee quick and timely interventions.”

Domenico Ciervo, GESAC ICT Manager
Naples International Airport

”As an international company, PRTG is ideal for us. If something went down half way across the world, we wouldn’t be woken up – we can rely on PRTG to identify the problem and alert us before it occurs – enabling the right person, in the right time zone to resolve the problem. At the end of the day, if we’re to provide an internal network experience for our employees that meets expectations, we need a tool like PRTG to be successful.”

Barry Kelly, Systems Engineer
Skyscanner

“I would recommend PRTG because it has helped us significantly improve service uptime by highlighting important alerts that would otherwise result in a system failure or service disruption if action was not taken. Thanks to PRTG, we can ensure that The Ritz London’s network and IT systems are five-star, just like the hotel.”

Richard Isted, IT Manager
The Ritz London

Your downtime monitor at a glance – even on the go

PRTG is set up in a matter of minutes and can be used on a wide variety of mobile devices.

device overview
Gartner peer insights

“Excellent tool for detailed monitoring. Alarms and notifications work greatly. Equipment addition is straight forward and server initial setup is very easy. ...feel safe to purchase it if you intend to monitor a large networking landscape.”

Read the complete review at Gartner Peer Insights

Create innovative solutions with Paessler’s IT partners

Partnering with innovative IT vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.

IP Fabric

IP Fabric

Combining PRTG’s broad monitoring feature set with IP Fabric’s automated network assurance creates a new level of network visibility and reliability.

Read more
Plixer

Plixer

Paessler and Plixer provide a complete solution adding flow and metadata analysis to a powerful network monitoring tool.

Read more
ScriptRunner

ScriptRunner

With ScriptRunner Paessler integrates a powerful event automation platform into PRTG Network Monitor.

Read more

PRTG makes downtime monitoring as easy as it gets

Custom alerts and data visualization let you quickly identify and prevent all kinds of network downtime issues.

Free download
PRODUCT OVERVIEW
Paessler PRTG

Paessler PRTG

Network Monitoring Software – Version 24.4.102.1351 (November 12th, 2024)

Hosting icon

Hosting

Download for Windows and cloud-based version PRTG Hosted Monitor available

Languages icon

Languages

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

test

Monitor everything

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

test

Pricing

Choose the PRTG Network Monitor subscription that's best for you

Discover more monitoring insights and stories

Resources Solution

Solutions for all your monitoring needs

  • Uptime monitoring
  • Hospital Computer Monitoring
  • Availability monitoring
Resources Content

Powerful stories from the monitoring world

  • Reducing MTTR and downtime in a manufacturing environment with PRTG and SIGNL4
  • Customer success story Federal Radio & PRTG
  • Customer success story Total Uptime & PRTG
Resources Solutions

Resources to master your monitoring challenges

  • Network Uptime Report
  • Gap in PRTG Graphs (no outage?)
  • SNMP System Uptime Sensor

Downtime Monitoring: FAQ

 

What is downtime monitoring?

Downtime monitoring is the process of tracking the operational status of IT infrastructure to quickly identify and fix downtime incidents. This process includes tasks such as website downtime monitoring and server downtime monitoring.

With automated downtime monitoring tools, you can receive immediate alerts when problems occur, so you can respond quickly to minimize disruptions. Continuous downtime tracking helps to maintain a detailed record of system performance, allowing your IT teams to identify patterns and prevent future incidents.

Why is monitoring downtime important?

Monitoring downtime is a critical task as it helps minimize the impact of downtime on business operations with the goal to maintain continuous service availability and reliability. Effective website downtime monitoring and server downtime monitoring with PRTG reduces the risk of extended service disruptions, protecting revenue and customer trust.

By monitoring uptime and downtime, you can maintain high performance levels, meet service level agreements (SLAs), and improve overall operational efficiency.

How does downtime monitoring work?

Downtime monitoring tools like PRTG use a variety of metrics to alert system administrators of irregularities or failures that could lead to downtime. This includes online service downtime tracking, which monitors web services for outages, and server downtime monitoring, which keeps an eye on server performance.

PRTG, for example, uses ping and other technologies, and tracks response time and response codes to quickly detect if a network device or service is down.

Automated downtime monitoring systems provide real-time alerts, so you can take immediate action resolve problems and restore normal operations. Continuous downtime tracking also provides a detailed log of all incidents for further analysis and improvement.

What is the difference between downtime monitoring and uptime monitoring?

While uptime monitoring focuses on the time when systems are operational, downtime monitoring specifically tracks and addresses the time periods when systems are not operational. Both uptime checks and downtime monitoring play a critical role in effective network performance monitoring and management.

Uptime monitoring services are used to keep services running smoothly, while downtime monitoring identifies outages immediately. Together, they provide a comprehensive view of the health of your IT infrastructure and help you maintain optimal performance and reliability.

What is a sensor in PRTG?

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

We asked: would you recommend PRTG? Over 95% of our customers say yes!

Paessler conducted trials in over 600 IT departments worldwide to tune its network monitoring software closer to the needs of sysadmins. The result of the survey: over 95% of the participants would recommend PRTG – or already have.

recommendation

Still not convinced?

Love

More than 500,000 sysadmins love PRTG

Paessler PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

PRTG

Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.

test

Try Paessler PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free.

PRTG Logo

Start monitoring downtime with PRTG and see how it can make your network more reliable and your job easier

Free download
PRODUCT OVERVIEW

Products

  • Paessler PRTG
    Paessler PRTGMonitor your whole IT infrastructure
    • PRTG Network Monitor
    • PRTG Enterprise Monitor
    • PRTG Hosted Monitor
    • PRTG extensions
      Extensions for Paessler PRTGExtend your monitoring to a new level
  • Icon Features
    FeaturesExplore all monitoring features

Monitoring with PRTG

  • Network monitoring
  • Bandwidth monitoring
  • SNMP monitoring
  • Network mapping
  • Wi-Fi monitoring
  • Server monitoring
  • Network traffic analyzer
  • NetFlow monitoring
  • Syslog server

Useful Links

  • PRTG Manual
  • Knowledge Base
  • Customer Success Stories
  • About Paessler
  • Subscribe to newsletter
  • PRTG Support
  • PRTG Consulting

Contact

Paessler GmbH
Thurn-und-Taxis-Str. 14, 
90411 Nuremberg 
Germany

info@paessler.com

+49 911 93775-0

  • Contact us
©2025 Paessler GmbHTerms & ConditionsPrivacy PolicyImprintReport VulnerabilityDownload & InstallSitemap
404 - Page not found 404 - Page not found 404 - Page not found