Hi everyi can't read acsm file with adobe digital message: "error check activation" and i can't delete my autorisation or changed my adobe ID, what is the solution ?

I find this solution via another forummember. for me it worked.

succes.

For this problem, you need to deauthorize and authorize ADE again.

Mac:

1. 1. Go-> Go to folder.

Go to folder dialog will appear.

1. 2. Type   ~/Library/Application Support/Adobe/Digital Editions

drag the activation.dat file to the trash.

ADE will be deauthorized now.

Now Authorize ADE again [Help -> Authorize Computer].

Windows:

Choose Start > Run.

In the Open text box, type regedit and then press Enter. The Registry Editor opens.

In the left pane of the Registry Editor, locate the following registry key:

HKEY_CURRENT_USER\Software\Adobe\Adept

Right-click the Adept key and choose Delete.

In the Confirm Key Delete dialog, click OK.

Your authorization will be deleted.

ADE will be deauthorized now.

Now Authorize ADE again.