What does the php-cgi.exe file do?
The php-cgi.exe process is also known as CGI / FastCGI and is a part of PHP or, as the case may be, Genie Timeline Professional. This software is produced by The PHP Group. An outdated or faulty version of php-cgi.exe can cause problems for your computer, ranging from slowness to error messages like these:
- CGI / FastCGI has stopped working. Windows is checking for a solution to the problem... (Windows 11, 10, 7)
- CGI / FastCGI 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)
- php-cgi.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module php-cgi.exe. Read of address 00000000.
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What you should know about php-cgi.exe CGI / FastCGI
php-cgi.exe is not a Windows system file and is known to frequently cause computer problems. The file php-cgi.exe is found in a subdirectory of "C:\Program Files".
Frequently occurring are file sizes such as 39,936 bytes (71% of all these files), 49,230 bytes or, as the case may be, 53,760 bytes.
The application does not appear as a visible window, but only in Task Manager. The php-cgi file does not come from Microsoft and is not part of the operating system. This file contains no information about the producer or the version.
For this reason, 49% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
A php-cgi.exe file has a 50% certainty of being dangerous if it is found in a subdirectory of C:\. In this case, the file size is usually 49,230 bytes (33% of all these files), 57,344 bytes or, as the case may be, 43,520 bytes. This file is no part of Microsoft Windows. The program executes in the background, and can only be terminated using Windows Task Manager. The php-cgi file does not supply any version information or other description.
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 php-cgi.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 php-cgi?
php-cgi.exe is part of PHP developed by The PHP Group Mike | |
was in C:\Program Files (x86)\Common Files\MICROSOFT SHARED\DAO\PHP\MANIFEST\php-cgi.exe after i installed phpDesiger and cracked it, i dont have web servers on PC. Kaspersky antivurus sayed its Trojan.Win32.Siscos.csg, its truyed to access svchost.exe | |
exe file need at the time of php configuration with IIS Debasis |
Summary: One user judges php-cgi.exe to be an essential file that should not be touched. 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 php-cgi.exe. source: file.net
How to uninstall PHP or Genie Timeline Professional
To remove CGI / FastCGI 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 PHP or Genie Timeline Professional in the list of displayed applications.
- Click the program, and then click Uninstall.


How to check if php-cgi.exe (CGI / FastCGI) 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 CGI / FastCGI. To do this, start Regedit, then look under HKEY_LOCAL_MACHINE > Software for: CGI / FastCGI 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 php-cgi.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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