What is Firstrun.log? Should I remove it?

Firstrun.log – a component of ClientMan potentially unwanted program

Firstrun.log is a file you may find on your Windows operating system, typically in the Temp folder. Since this file's type is LOG, its main purpose is to record various application, system, or user input events at all times. Unfortunately, the presence of this file on your Windows system might indicate an infection of ClientMan – a potentially unwanted and even dangerous application. Its main purpose is to redirect internet traffic to ad-filled websites and hijack all the installed web browsers, including Google Chrome, Mozilla Firefox, Internet Explorer, MS Edge, and others.

Name Firstrun.log
Type Application file related to information logging
Distribution Software bundle packages, third-party websites, deceptive ads
Infection symptoms Redirects to unknown or suspicious websites, increased number of ads, browser setting changes, etc.
Removal You can delete the file manually but it is recommended to uninstall the associated program. You can do it by using SpyHunter 5Combo Cleaner or another anti-malware to do it quickly
System fix If you noticed that your system is malfunctioning after you eliminated the associated application, you should use FortectIntego to remediate Windows OS

As evident, Windows operating system uses hundreds of thousands of files to operate correctly. With the addition of new applications and programs, the number of files can drastically increase. Likewise, malware components can also reside within the system if the infection is not stopped on time.

Each of such files has different functions, and Firstrun.log is used by the infection to log various records, for example, when or how a user interacts with web browsers or clicks on links. Such data can be extremely valuable for marketing purposes. In some cases, potentially unwanted programs might be used to gather sensitive information thanks to background processes that are spawned as soon as Windows is booted.

In this particular case, you should be aware that a .log file itself is not necessarily malicious, but the program that is using it could be. Therefore, you should always promptly check your computer with security software – SpyHunter 5Combo Cleaner can be a good choice for malware detection and removal.

If left unaddressed, a potentially unwanted application can continue to deliver private information to a remote server without you knowing anything about it. Here are some more capabilities of ClientMan:

  • Changes the settings of web browsers, including homepage, new tab URL and the search provider;
  • Inserts ads and sponsored links in search results;
  • Hides from the user in different ways;
  • Redirects to potentially dangerous or suspicious websites;
  • Shows intrusive ads on all visited websites, etc.

If you want to be in control of your web browsing again, you should eliminate this PUP immediately. You can do it manually, but experts' advice is to scan the machine with anti-malware. Note that Windows changes performed by adware and other potentially unwanted programs may have a negative impact on your OS, resulting in crashes, errors, and other stability issues.

To finish a prompt Firstrun.log removal along with the PUP, you should clean your web browsers and repair the damaged system files – FortectIntego is a perfect choice for this since fixing virus damage manually might require extensive IT knowledge.

Say away from spyware and adware

What we know as potentially unwanted programs today used to be attributed to the spyware category before, as they were used to spy on users' online activities and even harvest personal data. To make matters worse, these apps would take over users' web browsers and would establish persistence mechanisms to prevent a quick program removal. Such behavior can easily be classified as malicious. Luckily, the majority of PUP developers backed from malicious features and only left the annoying ones to deal with.

Therefore, while most PUPs are nowhere newer as dangerous as they used to be, they should still not be welcomed on your PC. Not only do they take up space but also diminish web browsing activities while running ads at all times.

The easiest way to prevent such software from being installed is by performing application installation carefully, which includes:

  • Not rushing through the installation steps;
  • Avoiding high-risk websites, such as those that host software cracks;
  • Always picking Advanced or Custom settings if such option is provided;
  • Declining all the offers on the way;
  • Removing all the marks from pre-ticked boxes.

Delete Firstrun.log along with all adware programs on your computer

While Firstrun.log removal can be performed manually, keep in mind that it is just a part of a potentially unwarned application that is used to spy on you and deliver intrusive advertisements. In order to make the suspicious activities end, you need to uninstall the associated apps.

To do that, you should access Programs and Features located in the Control Panel and uninstall the app from there. Unfortunately, some malicious files could remain on your PC (for example, Msmc.exe), so you need to either eliminate them manually or rely on robust anti-malware. SpyHunter 5Combo Cleaner can clean your system from all the malicious files and programs, while FortectIntego can help you restore Windows operation back to normal and clean your web browsers as required.

do it now!
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Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Fortect Intego, submit a question to our support team and provide as much details as possible.
Fortect Intego has a free limited scanner. Fortect Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Fortect, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.
About the author
Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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