RDN File Extension

What is RDN file?

RDN filename suffix is mostly used for OpenSSL Temporary Data Format files. RDN files are supported by software applications available for devices running Windows. Files with RDN extension are categorized as Misc Files files. The Misc Files subset comprises 6033 various file formats. OpenSSL is by far the most used program for working with RDN files.

Programs which support RDN file extension

Programs that can handle RDN files are as follows. RDN files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Updated: 11/21/2020

How to open file with RDN extension?

There can be multiple causes why you have problems with opening RDN files on given system. Fortunately, most common problems with RDN files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with RDN files.

Step 1. Get the OpenSSL

The most common reason for such problems is the lack of proper applications that supports RDN files installed on the system. The solution to this problem is very simple. Download OpenSSL and install it on your device. 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 OpenSSL installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Update OpenSSL to the latest version

You still cannot access RDN files although OpenSSL is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. The reason that OpenSSL cannot handle files with RDN may be that the software is outdated. The latest version of OpenSSL should support all file formats that where compatible with older versions of the software.

Step 3. Assign OpenSSL to RDN files

After installing OpenSSL (the most recent version) make sure that it is set as the default application to open RDN files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Selecting the first-choice application in Windows

• Clicking the RDN with right mouse button will bring a menu from which you should select the Open with option
• Select Choose another app → More apps
• Finally select Look for another app on this PC, point to the folder where OpenSSL is installed, check the Always use this app to open RDN files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• By clicking right mouse button on the selected RDN file open the file menu and choose Information
• Find the Open with option – click the title if its hidden
• From the list choose the appropriate program and confirm by clicking Change for all....
• If you followed the previous steps a message should appear: This change will be applied to all files with RDN extension. Next, click the Continue button to finalize the process.

Step 4. Check the RDN for errors

Should the problem still occur after following steps 1-3, check if the RDN file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. The RDN may be infected with malware – make sure to scan it with an antivirus tool.

If the RDN is indeed infected, it is possible that the malware is blocking it from opening. Scan the RDN file as well as your computer for malware or viruses. If the RDN file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If you obtained the problematic RDN file from a third party, ask them to supply you with another copy. 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 RDN file has been downloaded from the internet only partially, try to redownload it.

3. Verify whether your account has administrative rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the OpenSSL Temporary Data Format file.

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

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

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

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with OpenSSL Temporary Data Format file. It may be the case that the RDN files work properly with updated software that addresses some system bugs.

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