Container doesn't mount on macOS Tahoe but mounts on macOS Sequoia

[Mariano Espinosa]

I finally got a new computer (Apple Silicon M5) and installed the newest version of VeraCrypt. As such, I had to update my files and change them from being TrueCrypt to be solely VeraCrypt. My issue is that I cannot open the files in the new computer, but they open fine in the old one.

Here are my steps:
Old Computer: macOS Sequoia 15.7.5 (Intel); MacFuse 5.0.6; Veracrypt 1.25.9
New Computer: macOS Tahoe 26.5.2 (M5 Silicon); T-Fuse 0.1.3 (install package 1.2.7); Veracrypt 1.26.24

Files were compatible with TrueCrypt. I changed the password to remove the compatibility with TrueCrypt, and formatted as APFS. They open well on the old computer when I uncheck the TrueCrypt check box (thank God!). My files are on an external drive.

When I try to mount the files from the external drive, it sees it, but doesn't open after entering the same password used in the old computer. The typical message of wrong password appears.

Any recommendations? I really need to get rid of my old computer :-) I know the last, final option is to create new containers and move the encrypted files there, but I just want to make sure I am not breaking anything that will prevent me later on from accessing my files.

Appreciate it! I know you guys are really busy, so I won't be pestering you, but hopefully someone has a solution.

Thanks

[RichardH]

You might want to read this: https://veracrypt.io/en/Conversion_Guide_VeraCrypt_1.26_and_Later.html

Section 4.2 could apply even after you changed the password.

[Mariano Espinosa]

Awesome! I will check it and report back with success or findings.

Thanks, Richard

[Mariano Espinosa]

Happy to report that it fixed the issue. Anyone converting from TrueCrypt and updating to the newest VeraCrypt version on Mac should pay close attention to the conversion guide!

[RichardH]

Glad I could help.

For the record: this is not Mac specific, the same holds for other platforms.