ACO File Extension

What is ACO file?

ACO is a file extension commonly associated with Adobe Photoshop Color Swatch Format files. Adobe Systems defined the Adobe Photoshop Color Swatch Format format standard. Files with ACO extension may be used by programs distributed for Mac OS, Windows platform. ACO file belongs to the Settings Files category just like 1305 other filename extensions listed in our database. The most popular program for handling ACO files is Adobe Photoshop, but users can choose among 2 different programs that support this file format. On the official website of Adobe Systems Incorporated developer not only will you find detailed information about theAdobe Photoshop software, but also about ACO and other supported file formats.

Programs which support ACO file extension

The following list contains programs grouped by 2 operating systems that support ACO files. Files with ACO suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with ACO extension?

Problems with accessing ACO may be due to various reasons. On the bright side, the most encountered issues pertaining to Adobe Photoshop Color Swatch Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with ACO files.

Step 1. Download and install Adobe Photoshop

Problems with opening and working with ACO files are most probably having to do with no proper software compatible with ACO files being present on your machine. The most obvious solution is to download and install Adobe Photoshop or one to the listed programs: Adobe Creative Suite. 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 Adobe Photoshop website and download the installer.

Step 2. Verify the you have the latest version of Adobe Photoshop

If you already have Adobe Photoshop installed on your systems and ACO 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. The reason that Adobe Photoshop cannot handle files with ACO may be that the software is outdated. All of the file formats that were handled just fine by the previous versions of given program should be also possible to open using Adobe Photoshop.

Step 3. Associate Adobe Photoshop Color Swatch Format files with Adobe Photoshop

After installing Adobe Photoshop (the most recent version) make sure that it is set as the default application to open ACO files. The method is quite simple and varies little across operating systems.

Change the default application in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the ACO file
• Next, select the Choose another app option and then using More apps open the list of available applications
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Adobe Photoshop is installed. Now all that is left is to confirm your choice by selecting Always use this app to open ACO files and clicking OK.

Change the default application in Mac OS

• By clicking right mouse button on the selected ACO file open the file menu and choose Information
• Open the Open with section by clicking its name
• From the list choose the appropriate program and confirm by clicking Change for all....
• Finally, a This change will be applied to all files with ACO extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Ensure that the ACO file is complete and free of errors

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

1. Verify that the ACO in question is not infected with a computer virus

If the file is infected, the malware that resides in the ACO 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 ACO file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

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

If you obtained the problematic ACO file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with ACO extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Verify whether your account has administrative rights

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

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

If the systems has insufficient resources to open ACO 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 Adobe Photoshop Color Swatch Format files and ensure security of your device and operating system. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle ACO files.

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