Can I open a E-book, which is linked with Adobe Digital Editions On another computer of Mine?

[Uma Rao]

I Have an Ebook, Which can be opened only by using Adobe Digital Editons,
  Thus, i downloaded the adobe digital Editons, and authorised it without Adobe id and Passdode..
But now, i found out that i cant open the file in another computer of mine...Is there a possibility for me to open the ebook in another computer of mine

Any Help is appericiated...Thanks in advance :

[sjpt]

You must authorize the second computer with the same Adobe ID.

There are sometimes issues with this registration: if you have them ....

Sometimes ADE gets its registration/activation confused and in a semi-authorized state.
Uninstalling and reinstalling does not help.
Unfortunately, it often then gives misleading error messages about what is wrong.
A common incorrect message informs you that the ID is already in use on another computer and cannot be reused.

This can often be resolved by completely removing any authorization using ctrl-shift-D to the Library screen on ADE (cmd-shift-D if on Mac).
Restart ADE, and then reauthorize with your (old) Adobe ID.