What does the k9filter.exe file do?
The k9filter.exe process is also known as K9 Web Protection Filter and is a part of Blue Coat (Version K9 Web Protection). This software is produced by Blue Coat Systems (www.bluecoat.com). An outdated or faulty version of k9filter.exe can cause problems for your computer, ranging from slowness to error messages like these:
- K9 Web Protection Filter has stopped working. Windows is checking for a solution to the problem... (Windows 11, 10, 7)
- K9 Web Protection Filter has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 11, 10, 7)
- k9filter.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module k9filter.exe. Read of address 00000000.
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What you should know about k9filter.exe K9 Web Protection Filter
k9filter.exe is not a Windows system file and is known to frequently cause computer problems. The file k9filter.exe is found in a subdirectory of "C:\Program Files".
Frequently occurring are file sizes such as 2,122,000 bytes (25% of all these files), 2,647,256 bytes as well as 4 other variants.
The k9filter file is not part of the Windows operating system. The application does not have a visible window, and does not appear on the taskbar. The producer of the file is registered with a certificate authority. This confirms the genuineness of the file. The file contains a digital signature from Verisign, a subsidiary of Symantec. Verisign thereby confirms this file's authenticity and integrity.
K9filter.exe is capable of track other applications.
For this reason, 30% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves k9filter.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.
What do other computer users say about k9filter?
| Web Filter by Blue Coat Systems (further information...) Rick Ahlander | |
| Web Filter and not a shabby one at that (further information...) Pheonix | |
| Is a protection filter (further information...) Francisco Viturro | |
| its a web filtering program | |
| It blocks unwanted sites mosharrof | |
| Blue Coat K9 Web Protection Barry Zeeko |
Summary: 4 users consider k9filter.exe essential and should not be removed. One user considers it harmless. However, one user considers this to be a suspicious process and would like to get rid of it. For this reason, one user has already deleted k9filter.exe. source: file.net
How to uninstall Blue Coat
To remove K9 Web Protection Filter from your computer, please follow the manual instructions below.
- Click the Windows Start Button. You can find it in the lower-left corner of the taskbar.
- Type 'uninstall'.
- Click Add or remove programs.
- Now locate Blue Coat in the list of displayed applications.
- Click the program, and then click Uninstall.
How to check if k9filter.exe (K9 Web Protection Filter) was uninstalled completely
After uninstalling, restart your computer. Then open Windows Explorer and check if a folder with the software name still exists under C:\Program Files. Also, check the Registry for remnants of K9 Web Protection Filter. To do this, start Regedit, then look under HKEY_LOCAL_MACHINE > Software for: K9 Web Protection Filter or the name of the producer. Keep in mind that only a computer professional should delete entries in the Windows Registry directly.
Last but not least
If Windows is not working properly, startup is slow, or k9filter.exe is causing problems, a good Windows diagnostic tool may help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.
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