ULD File Extension

ULD file icon
Unified Luminaire Datafile
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What is ULD file?

Full format name of files that use ULD extension is Unified Luminaire Datafile. Unified Luminaire Datafile format was developed by DIAL GMBH. Files with ULD extension may be used by programs distributed for Windows platform. ULD file belongs to the Misc Files category just like 4332 other filename extensions listed in our database. DIALux is by far the most used program for working with ULD files. On the official website of DIAL GMBH developer not only will you find detailed information about theDIALux software, but also about ULD and other supported file formats.

Programs which support ULD file extension

Below is a table that list programs that support ULD files. ULD files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support ULD file

Windows Windows

How to open file with ULD extension?

Problems with accessing ULD may be due to various reasons. On the bright side, the most encountered issues pertaining to Unified Luminaire Datafile files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Get the DIALux

The most common reason for such problems is the lack of proper applications that supports ULD files installed on the system. The solution is straightforward, just download and install DIALux. On the top of the page a list that contains all programs grouped based on operating systems supported can be found. If you want to download DIALux installer in the most secured manner, we suggest you visit DIAL GMBH website and download from their official repositories.

Step 2. Check the version of DIALux and update if needed

You still cannot access ULD files although DIALux is installed on your system? Make sure that the software is up to date. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of DIALux installed, it may not support ULD format. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using DIALux.

Step 3. Set the default application to open ULD files to DIALux

After installing DIALux (the most recent version) make sure that it is set as the default application to open ULD files. The next step should pose no problems. The procedure is straightforward and largely system-independent

The procedure to change the default program in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the ULD file
  • Next, select the Choose another app option and then using More apps open the list of available applications
  • The last step is to select Look for another app on this PC option supply the directory path to the folder where DIALux is installed. Now all that is left is to confirm your choice by selecting Always use this app to open ULD files and clicking OK.

The procedure to change the default program in Mac OS

  • Right-click the ULD file and select Information
  • Open the Open with section by clicking its name
  • Select DIALux and click Change for all...
  • If you followed the previous steps a message should appear: This change will be applied to all files with ULD extension. Next, click the Continue button to finalize the process.

Step 4. Ensure that the ULD file is complete and free of errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper ULD file. Problems with opening the file may arise due to various reasons.

1. Verify that the ULD in question is not infected with a computer virus

If the file is infected, the malware that resides in the ULD file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the ULD file is indeed infected follow the instructions below.

2. Verify that the ULD file’s structure is intact

Did you receive the ULD file in question from a different person? Ask him/her to send it one more time. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. If the ULD file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the Unified Luminaire Datafile file.

4. Verify that your device fulfills the requirements to be able to open DIALux

The operating systems may note enough free resources to run the application that support ULD files. Close all running programs and try opening the ULD file.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Unified Luminaire Datafile file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle ULD files.

Do you want to help?

If you have additional information about the ULD 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 ULD file.

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