SITEMAP file icon

SITEMAP File Extension

ASP.NET Site Map Format
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What is SITEMAP file?

Full format name of files that use SITEMAP extension is ASP.NET Site Map Format. ASP.NET Site Map Format format was developed by Microsoft. SITEMAP files are supported by software applications available for devices running Windows. SITEMAP file format, along with 303 other file formats, belongs to the Web Files category. The most popular program for handling SITEMAP files is Visual Web Developer, but users can choose among 1 different programs that support this file format.

Programs which support SITEMAP file extension

Below is a table that list programs that support SITEMAP files. Files with SITEMAP suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Programs that support SITEMAP file

How to open file with SITEMAP extension?

Problems with accessing SITEMAP may be due to various reasons. On the bright side, the most encountered issues pertaining to ASP.NET Site Map Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with SITEMAP files.

Step 1. Install Visual Web Developer software

Install software to open SITEMAP file The main and most frequent cause precluding users form opening SITEMAP files is that no program that can handle SITEMAP files is installed on user’s system. This issue can be addressed by downloading and installing Visual Web Developer or different compatible program, such as Microsoft Visual Studio. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. The safest method of downloading Visual Web Developer installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Verify the you have the latest version of Visual Web Developer

Update software that support file extension SITEMAPIf the problems with opening SITEMAP files still occur even after installing Visual Web Developer, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Visual Web Developer is available. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why SITEMAP files are not compatible with Visual Web Developer. The latest version of Visual Web Developer should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open SITEMAP files to Visual Web Developer

If you have the latest version of Visual Web Developer installed and the problem persists, select it as the default program to be used to manage SITEMAP on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Associate software with SITEMAP file on Windows

Change the default application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the SITEMAP file
  • Select Choose another app → More apps
  • Finally select Look for another app on this PC, point to the folder where Visual Web Developer is installed, check the Always use this app to open SITEMAP files box and conform your selection by clicking OK button
Associate software with SITEMAP file on Mac

Change the default application in Mac OS

  • By clicking right mouse button on the selected SITEMAP file open the file menu and choose Information
  • Open the Open with section by clicking its name
  • From the list choose the appropriate program and confirm by clicking Change for all....
  • A message window should appear informing that This change will be applied to all files with SITEMAP extension. By clicking Continue you confirm your selection.

Step 4. Verify that the SITEMAP is not faulty

Should the problem still occur after following steps 1-3, check if the SITEMAP file is valid. Being unable to access the file can be related to various issues.

Check SITEMAP file for viruses
1. The SITEMAP may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the SITEMAP is infected with a virus, this may be that cause that prevents you from accessing it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the SITEMAP file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If the SITEMAP file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. If the SITEMAP file has been downloaded from the internet only partially, try to redownload it.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Visual Web Developer

If the system is under havy load, it may not be able to handle the program that you use to open files with SITEMAP extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Latest versions of programs and drivers may help you solve problems with ASP.NET Site Map Format files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with SITEMAP files affecting older versions of given software.

Do you want to help?

If you have additional information about the SITEMAP file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on SITEMAP file.

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