Open-The-File.com

Find how to open any file type

How to open .ASO files on Mac

To open .ASO files on Mac, control-click the file and choose Get Info or inspect the filename and source to determine whether it is NCBI data or an accounting export.

Step-by-step instructions

  1. Control-click the file and choose Get Info or inspect the filename and source to determine whether it is NCBI data or an accounting export.
  2. For NCBI data, use NCBI DATATOOL or transfer the file to a desktop environment where the NCBI tools are installed.
  3. For accounting exports, use the accounting application or online banking workflow that generated the .ASO file; macOS has no general built-in .ASO viewer.
  4. If the file is compressed as .aso.gz, decompress it before opening or converting it.

Alternative methods

  • Open .ASO in a browser-based viewer if desktop apps fail.
  • Try opening .ASO on Mac with a secondary app to rule out app-specific issues.
  • Convert .ASO only with trusted tools when direct opening is not possible.

Common issues

The file opens as unreadable text or gibberish

NCBI .ASO files are binary ASN.1 data, so a normal text editor will not display meaningful content.

  1. Confirm whether the file came from NCBI or a GenBank distribution.
  2. Use NCBI DATATOOL to convert or process the file instead of opening it as plain text.
  3. If the file is .aso.gz, decompress it first and then run the conversion.

The wrong application tries to open the file

.ASO is used by more than one workflow, so the operating system may associate it with the wrong program or with no program at all.

  1. Identify whether the file is scientific NCBI data or an accounting OFX-style export.
  2. Use Open With to choose NCBI DATATOOL-related processing for GenBank data or the appropriate Simply Accounting/Sage workflow for accounting data.
  3. Avoid changing the file extension as a shortcut; it does not convert the file.

The file is still compressed

NCBI release files are often distributed with a .aso.gz suffix, meaning the .ASO file is inside a gzip-compressed file.

  1. Decompress the .gz file with a gzip-compatible tool.
  2. Verify that the extracted file ends in .aso.
  3. Process the extracted .aso file with the NCBI toolchain.

Accounting import fails

Some .ASO files are Simply Accounting/Sage OFX exports, and import can fail if the file was downloaded for the wrong account, changed after export, or opened in software that does not support that workflow.

  1. Download the export again from the bank or accounting portal.
  2. Do not edit the file manually unless instructed by the accounting software vendor.
  3. Import it using the Simply Accounting or Sage workflow that the bank documents for .ASO files.

Security note

.ASO accounting files can contain sensitive financial account and transaction information; store and share them as confidential data.

Back to .ASO extension page