RELS File Description

Written by:   |   Updated: November 26, 2018

Microsoft Silver

RELS File Summary

There is one file type associated with the RELS File Extension, the Open Office XML Relationships File format. According to our database, three distinct software programs (conventionally, Microsoft Excel developed by Microsoft Corporation) will enable you to view these files. The majority of RELS files are considered Page Layout Files.

The RELS File Extension can be viewed on the Windows, Mac, and iOS operating systems. They are supported on both desktop and mobile devices. These files have a Popularity Rating of "Low", meaning they are not very commonly observed on your average hard disk.

If you are having problems opening RELS files, or would simply like to learn more about the software programs and developers that are associated with them, please see the complete information contained below.

Low
Demand
8761
Ranking

/ 11690

Active

Status

26

November

2018

Amended

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Known RELS Files


Leading RELS Type

.RELS
File Ext:.rels
Category:Open Office XML Relationships File

The RELS files are found in Microsoft Open Office XML files. They basically store XML specs for how parts in a package are combined to create a document.

Created by: Microsoft Corporation
Division:Page Layout Files
Entry: HKEY_CLASSES_ROOT\.rels

Software Programs That Open The Open Office XML Relationships File:


Microsoft Excel by Microsoft Corporation

Windows
Mac
iOS
Android

Microsoft Word by Microsoft Corporation

Windows
Mac

Microsoft PowerPoint by Microsoft Corporation

Windows
Mac
iOS
Android

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RELS Popularity


Primary OS Ranking

Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)


RELS File Complications


Issues Opening RELS Files

Missing Microsoft Excel

When trying to open your RELS file, you get the error "Can't Open RELS File Type". If so, it typically means that you don't have Microsoft Excel installed for %%os%%. This will prevent you from double-clicking to open the RELS file because the OS doesn’t know how to handle it.


Tip: If you have another software that you know opens RELS files, you can select it by hitting the "Show Apps" button.


Microsoft Excel is Out-of-Date

Occasionally, you might have an outdated version of Microsoft Excel installed that's incompatible with your Open Office XML Relationships File type. Download the latest Microsoft Excel version from the Microsoft Corporation website to ensure you have the correct one installed. Most of the time your Open Office XML Relationships File file was created by a newer Microsoft Excel than what you have installed.


Tip: Sometimes you can get a clue about the version of RELS file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).


Summary: In either case, the majority of problems opening RELS files are related to not having the correct software application installed on your computer.


Additional RELS Opening Issues

You can still experience errors opening RELS files even with the latest version of Microsoft Excel installed on your PC. There can be other issues - unrelated to software - preventing you from opening RELS files. Issues that aren't software-related:

  • RELS file references in the Windows Registry are broken
  • Accidental deletion of the description of the RELS file in the Windows registry
  • Microsoft Excel or another RELS application experienced a flawed installation
  • The RELS itself is corrupted
  • Your RELS has adversely impacted by malware
  • Hardware associated with RELS has outdated drivers
  • Windows cannot load your Open Office XML Relationships File file due to insufficient resources (eg. RAM)

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