Opening an ACP File

The ACP file type is primarily associated with ArCon Project.

ACPFile Extension ACP
File extension: ACP
File type:  project file

What is an ACP file

ACP files mostly belong to ArCon Project. The ACP file format has several technical uses. In one common case, it serves as an architectural CAD project file used by the ArCon Project. This type of file holds design data and is often managed by specialized CAD software (Plantek).
Other identified uses include:

  • Age of Wonders 3 mod file: Holds game modification data as used in Age of Wonders 3 (Nexus Mods).
  • Archived Content Package: A compressed archive file format using ZIP, related to Adobe Acrobat Pro (Adobe Acrobat), sometimes linked with AutoCAD workflows.
  • ISC AirCalc project file: A project file format used by ISC-ACPro, also known as an ACPLT/ACS880 project file.
  • Game data file: A file compressed with GZIP containing game data (Grinding Gear).

FilExt.com note: Each variant requires its matching software to open and view its contents. The file may be compressed or structured as a proprietary project, so using the correct application is key.

How can I open an ACP file?

You need a suitable software like ArCon Project to open an ACP file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your ACP file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ACP file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ACP Text Viewer

Choose your .acp file to analyze

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Programs that open and convert ACP files:

  1. ArCon Project
    See the previous paragraphs to learn more about the main application. ACP files are often referred to as ArCon Project cads because this type of file is primarily created or used by this software.
  2. ACB
  3. Acrobat Paper Capture (Temporary File) by Adobe Systems Incorporated
  4. Action! (Document) by Macromedia
    Action! was a popular program in the early 1990's used to create multimedia presentations in Windows 3.1. It is no longer sold however viewers can still be found. This file format is classified as Graphic. Related links: Action! Viewer
  5. ArCon (Project) by ArCon-Shop.com
    ArCon is a visual architecture computer program. The identifying characters used for this association are - Hex: 41 72 43 6F 6E 20 2D 20 50 72 6F 6A 65 6B 74, ASCII: ArCon.-.Projekt.
  6. EditPlus (Auto Completion File) by ES-Computing
    EditPlus is a text editor, HTML editor and programmers editor for Windows. While it can serve as a good Notepad replacement, it also offers features for Web page authors and programmers. The identifying characters used for this association are - Hex: 23 54 49 54 4C 45 3D, ASCII: #TITLE=. Related links: Wikipedia EdiPlus Page, EditPlus Wiki
  7. Office Assistant (Preview File) by Microsoft Corporation
  8. TCPDUMP
    The identifying characters used for this association are - Hex: D4 C3 B2 A1, ASCII: Ôò¡.

ACP file format:

To view or edit ACP files you need to know the file format, because it determines how the data in this file is stored. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Knowledge is power - this also applies when dealing with unknown or faulty files. Below you will find our evaluation of the ACP files:

ACP is rarely used as a file extension and does not have a uniform file format. The following file formats are most commonly found in ACP files:

The remaining 60% of all ACP files are files with no common format, the following 4 formats exist: TCPDUMP's style capture and CPR. The category is itdpc. You can get all the details of your ACP file by dragging it onto this page or by clicking the button "Choose your .acp file to analyze" above.

Technical Data for ACP File Extension

File classification:
CAD
Related files:
acs, accpac, apc, rpk, acb, txt, zip, mdi, lxa, usa, dwg, dxf, gz, mod

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: AlbumCreator.ProjectFile, FileType: FirmTools Album Creator Project File, AppName: FirmTools Album Creator
EXEFile: ac.exe

ProgramID: Office.ActorPreview

ProgramID: RealJukebox.ACP.1, FileType: AAC for SD, AppName: RealOne Player
EXEFile: RealPlay.exe

ProgramID: RealJukebox.ACP.1, FileType: AAC for SD, AppName: RealPlayer

ProgramID: RealJukebox.ACP.1, FileType: AAC for SD, AppName: Windows Media Player
EXEFile: wmplayer.exe

ProgramID: RealJukebox.ACP.1, FileType: Panasonic AAC, AppName: RealJukebox Application

ProgramID: RealJukebox.ACP.1, FileType: Panasonic AAC, AppName: RealOne Player
EXEFile: RealPlay.exe

ProgramID: 3D Home DesignerProjekt
EXEFile: C:\3D Home Designer\Program\ARCON.exe %1

ProgramID: ethereal-file
EXEFile: %ProgramFiles%\Ethereal\ethereal.exe %1

ProgramID: IviDvr.MediaFile
EXEFile: %ProgramFiles%\InterVideo\WinDVR3\WinDVR.exe %1

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\Real\RealOne Player\RealPlay.exe %1

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\Real\RealPlayer\RealPlay.exe %1

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\RealOne Player\RealPlay.exe %1

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\Real\RealJukebox\RealJBox.exe /m audio/x-mei-aac %1

ProgramID: ethereal-file
EXEFile: D:\hack'n-crack\Ethereal\ethereal.exe %1

ProgramID: SFTENCDD.Document
EXEFile: %ProgramFiles%\SONICF~1\SFTENCDD.EXE %1

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\Media\Audio and Video\Real\RealPlayer\RealPlay.exe %1

ProgramID: wireshark-file
EXEFile: %ProgramFiles%\Wireshark\wireshark.exe

ProgramID: AlbumCreator.ProjectFile
EXEFile: %ProgramFiles%\FirmTools\Album Creator\ac.exe

ProgramID: RealJukebox.ACP.1
EXEFile: %ProgramFiles%\RealPlayer\RealPlay.exe

ProgramID: ethereal-file
EXEFile: %ProgramFiles%\_wwwUtils\_BB\Ethereal0.10.10\ethereal.exe


an acp project file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with ACP files

  • Associate the ACP file extension with the correct application.
  • Update your software that should actually open project files. Because only the current version supports the latest ACP file format. Search, therefore, e.g. on the manufacturer website after an available ArCon Project update.
  • To make sure that your ACP file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
  • Click here to open your .ACP file online - secure, fast, and no downloads needed.
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