In computer network communications, the HTTP 404, 404 not found, 404, 404 error, page not found or file not found error message is a hypertext transfer protocol (HTTP) standard response code, to indicate that the browser was able to communicate with a given server, but the server could not find what was requested. The error may also be used when a server does not wish to disclose whether it has the requested information.
A 404 error is often returned when pages have been moved or deleted. In the first case, it is better to employ URL mapping or URL redirection by returning a 301 Moved Permanently response, which can be configured in most server configuration files, or through URL rewriting; in the second case, a 410 Gone should be returned. Because these two options require special server configuration, most websites do not make use of them.
404 errors should not be confused with DNS errors, which appear when the given URL refers to a server name that does not exist. A 404 error indicates that the server itself was found, but that the server was not able to retrieve the requested page.
Some websites report a \"not found\" error by returning a standard web page with a \"200 OK\" response code, falsely reporting that the page loaded properly; this is known as a soft 404. The term \"soft 404\" was introduced in 2004 by Ziv Bar-Yossef et al.
Soft 404s are problematic for automated methods of discovering whether a link is broken. Some search engines, like Yahoo and Google, use automated processes to detect soft 404s. Soft 404s can occur as a result of configuration errors when using certain HTTP server software, for example with the Apache software, when an Error Document 404 (specified in a .htaccess file) is specified as an absolute path (e.g. ) rather than a relative path (/error.html). This can also be done on purpose to force some browsers (like Internet Explorer) to display a customized 404 error message rather than replacing what is served with a browser-specific \"friendly\" error message (in Internet Explorer, this behavior is triggered when a 404 is served and the received HTML is shorter than a certain length, and can be manually disabled by the user).
This is important if the Web site uses a virtual directory (VDIR). A VDIR is a directory that is not contained in the home directory of the Web site, but appears to client browser as though it does. This virtual directory must be mapped to a subfolder on a drive or reference the files by name.
For example, assume that the URL that caused the 404 error is , and the IIS snap-in shows that for Microsoft.Com Web site, the /Test/ directory is actually a virtual directory that maps to the location of c:\\Information on the IIS computer. This means that you must verify that the File1.htm file is located in the c:\\Information directory (and that the file name is spelled correctly).
IIS Dynamic Content: A 404.2 entry in the W3C Extended Log file is recorded when a Web Extension is not enabled. Use the IIS Microsoft Management Console (MMC) snap-in to enable the appropriate Web extension. Default Web Extensions include: ASP, ASP.NET, Server-Side Includes, WebDAV publishing, FrontPage Server Extensions, Common Gateway Interface (CGI). Custom extensions must be added and explicitly enabled. See the IIS Help File for more information.
IIS Static Content: A 404.3 entry in the W3C Extended Log file is recorded when an extension is not mapped to a known extension in the MIME Map property. Use the IIS Microsoft Management Console (MMC) snap-in to configure the appropriate extension in the MIME Map. See the IIS Help file for more information.
NuGet writes a file named project.assets.json in the obj folder, and the .NET SDK uses it to get information about packages to pass into the compiler. This error occurs when the assets file project.assets.json is not found during build. The full error message is similar to the following example:
In macOS Monterey (in the Beta at least), Ruby (ruby 2.6.3p62 (2019-04-16 revision 67580)) is still included but it doesn't seem to work well (fatal error: 'ruby/config.h' file not found), so I installed my own version of Ruby. You can install ruby manually, but I prefer to use rbenv, a Ruby version manager.
I had this problem after installing Big Sur. I found the file ruby/config.h was not present in the Xcode Packages in the Xcode versions I had installed prior to upgrading. I was able to correct it by uninstalling the Xcode versions and reinstalling them.
Adding on ssell's post and peter70's comment, I also still had issues after installing xcode command line tools again, and switching the xcode active developer directory. I was using CMake, and so deleted the debug/release folders which had existing Makefiles referencing out-of-date locations on Mojave. So for future problem resolving, after running the commands from ssell's post:
UPDATE: June 2021: There is a Crashlytics podspec bug that can also cause this issue. The workaround is to explicitly add GoogleUtilities/Environment to the Podfile or move use_frameworks! to the top of the Podfile. Details in -ios-sdk/issues/8137. The issue will be fixed in the upcoming Firebase 8.3.0 release.
As I faced the problem and the obvious solution proposed by the documentation and Matt Phillips seemed not to work, I would add to check ALL your .pro files of all your potential subprojects.
C:\\filename.xls' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files on the File menu, make sure that the file has not been renamed, moved, or deleted.
This behavior can occur if the Open action entry for this file type ends in %1.If the Open action of the file type is edited and the line is restored before you press OK, a %1 is added to the registry key.If you intentionally add a %1 to the Open action entry for this file type, a %1 is added to the registry key. If you subsequently delete the %1 from the Open action entry, the registry key remains unchanged and must be manually edited.Additionally, this issue can occur when you manually change the file association of .xls files, or in some circumstances, when you are running multiple versions of Excel on the same computer.
Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.To change the Open action of a file type, follow these steps:
Thanks, but the filename in the error message is blank!!Moving the project to local drive without spaces in thedirectory/file names works but I also have an unadulterated projectthat works from the original network location - complete with spacesin directory structure (but not in filename).
Since there is no information on this error, I think it would be nice to keep it on the internet: \"Meshing failed with the following error: Mesh output file not found\" error is really bothering. The reason of this error is unknown to me, so the answer.
The main error mentions that meshing has failed. The description of the error indicates the fact that Input is searching for the output file after the finite element mesh is generated but it is not found.
I've come across this error several times, it usually happens when making alterations to the modell. I have no indication that it is related to any of the structure types. As a workaround I've found that initiating a new mesh with a 'very coarse' element distribution might work, and then you can remesh with your preferred element distribution setting, saving your work.
Hi,I install the mongoDB community server one and I also added bin folder to path.But in bin folder i did not found the mongo.exe.There is mongod.exe but not mongo.exe.So I am not able to make sure how to install it properly.Can anyone please help me in this.Thanks
The missing Windows Recovery Environment files will need to be copied from the Windows Installation media to the running system to resolve this issue.You should perform the following steps on the machine which is having the issue.
I have been making some blocks and I noticed they are being synced to a location on my OneDrive. However, I'm not sure what I did, but now when I press the Blue cloud with gear icon, I get file not found.
I recently upgraded to Packet Tracer 7.3.0, but have been experiencing issues where the icons (switch, router, pc) are appearing as 'FILE NOT FOUND'. I switched to an old version and it works fine, but my .pkt files that I have from the semester are not supported on the older version(s) of Packet Tracer, so I upgraded back to 7.3.0. I can also still configure everything, but it's just a big headache to see that giant error message. Is there a fix to this issue Maybe I'm just missing some packages
My personal solution to this was to determine what version the .pkt files were saved in and update packet tracer back to the version where majority of my files were saved in (7.2.2). Not the greatest or simplest solution, but I need it working ASAP to begin studying before classes start again.
It's just a wrong file name. On the left below is the file name in 7.2.2, and on the right 7.3. I am assuming they either forgot to rename them removing the @2x in the file name. The programming is still trying to call the file name on the left. So you could simply change the file name in 7.3 removing the @2x in the name and it works after you restart the program.
Hi there, Recently, I am always receiving a warning message (Failure:unable to open the file: file not found or empty) from the kinovea 0.8.27 (64 bit) when I load videos from d