TDL File Extension

What is TDL file?

Full format name of files that use TDL extension is Tab Delineated Format. Files with TDL extension may be used by programs distributed for Windows platform. TDL file format, along with 1326 other file formats, belongs to the Data Files category. Users are advised to use Microsoft Excel software for managing TDL files, although 2 other programs can also handle this type of file. Microsoft Excel software was developed by Microsoft Corporation, and on its official website you may find more information about TDL files or the Microsoft Excel software program.

Programs which support TDL file extension

The following listing features TDL-compatible programs. TDL files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

How to open file with TDL extension?

There can be multiple causes why you have problems with opening TDL files on given system. On the bright side, the most encountered issues pertaining to Tab Delineated Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Download and install Microsoft Excel

The main and most frequent cause precluding users form opening TDL files is that no program that can handle TDL files is installed on user’s system. This one is an easy one. Select Microsoft Excel or one of the recommended programs (for example, Lotus 1-2-3, Ashampoo Media Player) and download it from appropriate source and install on your system. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Microsoft Excel website and download the installer.

Step 2. Verify the you have the latest version of Microsoft Excel

If you already have Microsoft Excel installed on your systems and TDL files are still not opened properly, check if you have the latest version of the software. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. If you have an older version of Microsoft Excel installed, it may not support TDL 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 Microsoft Excel.

Step 3. Assign Microsoft Excel to TDL files

If you have the latest version of Microsoft Excel installed and the problem persists, select it as the default program to be used to manage TDL on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Clicking the TDL with right mouse button will bring a menu from which you should select the Open with option
• Select Choose another app → More apps
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Microsoft Excel installation folder. Confirm by checking Always use this app to open TDL files box and clicking OK button.

The procedure to change the default program in Mac OS

• Right-click the TDL file and select Information
• Open the Open with section by clicking its name
• Select Microsoft Excel and click Change for all...
• Finally, a This change will be applied to all files with TDL extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Ensure that the TDL 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 TDL file. It is probable that the file is corrupted and thus cannot be accessed.

1. Check the TDL file for viruses or malware

If the file is infected, the malware that resides in the TDL file hinders attempts to open it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the scanner detected that the TDL file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

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

Did you receive the TDL file in question from a different person? Ask him/her to send it one more time. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. It could happen the the download process of file with TDL extension was interrupted and the file data is defective. Download the file again from the same source.

3. Verify whether your account has administrative rights

Sometimes in order to access files user need to have administrative privileges. Switch to an account that has required privileges and try opening the Tab Delineated Format file again.

4. Make sure that the system has sufficient resources to run Microsoft Excel

If the systems has insufficient resources to open TDL files, try closing all currently running applications and try again.

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

Latest versions of programs and drivers may help you solve problems with Tab Delineated Format files and ensure security of your device and operating system. It may be the case that the TDL files work properly with updated software that addresses some system bugs.

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