The File Extensions Database


.ACID File Extension

  • Developer by: Data on Acid
  • Category: Encoded Files

What is an .ACID file?

.ACID is ACID Encrypted File

An ACID file is a file encrypted by the ACiD algorithm. It stores a file that most likely contains confidential information such as financial, federal, commercial and personal data.

ACiD (A Covert Identity) is an application used to encrypt files with sensitive information. It can encrypt one file or an entire directory with an encryption key generated by a quantum random number generator. The program can be used to secure files on your computer or when sending files via email.

NOTE: AciD is discontinued and no longer available.

How to solve problems with ACID files

  • Associate the ACID file extension with the correct application. On :
    Windows: Right click on any ACID file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ACID files". Mac: Right click (or Ctrl-click) the ACID file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ACID is ACID Encrypted File. Because only the current version supports the latest ACID file format. Search, therefore, e.g. on the Data on Acid manufacturer website after an available .ACID is ACID Encrypted File update.
  • To make sure that your ACID file is not corrupted or virus-infected, get the file again and scan it with antivirus software.