Freedb.org has suspended its free database from March 31, 2020.
To avoid the error message, please turn off CDDB support in the Virtual CD Settings -> "Configuration" tab.
The next version will use an alternate database.
Addendum, 02/16/2022: Meanwhile freedb.org redirects to gnudb.org. In order for this database to be used, the following changes are necessary:
Importing a new VC10CDDB.dll: Please rename the file in C:\Program Files (x86)\Virtual CD v10\System before you copy the new file there!
Change the registry entry HKEY_CURRENT_USER\SOFTWARE\H+H Software GmbH\Virtual CD 10\CDDB\Site from freedb.freedb.org to gnudb.gnudb.org.
Alternatively you can download a registry file here and execute it by doubl-clicking it: gnudb.reg