Error! Check Activation.

[eileenv72832630]

I have a Adobe ID.  I'm trying to download books and it keeps on giving me an error;

Error! Check Activation.

I have checked, and it is activated, and aparently fine. But still can't download books.

Please please help

[eileenv72832630]

I'm using windows 10,  and ADE 4.5

[Nanaky]

1. Close all applications.
2. Choose Start > Run.
3. In the Open text box, type regedit and then press Enter. The Registry Editor opens.
4. In the left pane of the Registry Editor, locate the following registry key: HKEY_CURRENT_USER\Software\Adobe\Adept
5. Select the Adept key.
6. Choose File > Export.
7. In the Export Registry File dialog box, select Selected Branch under Export Range. Enter a name and location for the backup registry key, and then click Save.
8. Right-click the Adept key and choose Delete.
9. In the Confirm Key Delete dialog, click OK.
10. Close the Registry Editor.
11. Open Adobe Digital Editions and reauthorize.