Varieties of ADML Files

Dominant ADML File Type

.ADML

Extension:	.adml
Type:	Group Policy Language-Specific Administrative Template

Setting file saved in text format associated with Group Policy Object Editor, an administrative application used to manage permissions for groups of computers. ADML files allows the software user interface to display information in different languages.

Created by:	Microsoft Corporation
Class:	System Files
Folder:	HKEY_CLASSES_ROOT\.adml

Software Programs That Open The Group Policy Language-Specific Administrative Template:

Microsoft Group Policy Object Editor by Microsoft Corporation

Windows

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Troubleshooting Problems Opening ADML Files

Frequent ADML Opening Issues

Microsoft Group Policy Object Editor Disappeared

Double-clicking your ADML file prompts the message "%%os%% Can't Open ADML File". If so, it typically means that you don't have Microsoft Group Policy Object Editor installed for %%os%%. The OS won't know what to do with your ADML file, so double-clicking to load the file doesn't work.

Tip: If you know of another program that can open your ADML file, you can try opening it by selecting the application from the programs listed.

Incorrect Microsoft Group Policy Object Editor Version

Occasionally, you might have an outdated version of Microsoft Group Policy Object Editor installed that's incompatible with your Group Policy Language-Specific Administrative Template type. If you've got the wrong version of Microsoft Group Policy Object Editor installed, you'll need to install the correct version. This issue mainly occurs when your Group Policy Language-Specific Administrative Template file was created by a newer version of Microsoft Group Policy Object Editor than you have on your PC.

Tip: Find clues on the correct software version by right-clicking your ADML file and clicking "Properties".

Ultimately, most of the difficulties opening ADML files are due to having the wrong version of Microsoft Group Policy Object Editor installed.

Other ADML File Issues

Even with the correct version of Microsoft Group Policy Object Editor installed, you can still experience difficulties opening ADMLs. There can be external issues inside of %%os%% that are causing these errors when opening ADMLs. These issues include:

• ADML file references in the Windows Registry are broken
• Deletion of the ADML file description from the Registry by mistake
• Invalid installation of a ADML-associated program (eg. Microsoft Group Policy Object Editor)
• Something has caused file corruption of your ADML
• ADML file integrity has been compromised by malware
• Device drivers for ADML-related hardware are out-of-date
• Your PC doesn’t have enough available resources to open the Group Policy Language-Specific Administrative Template file