Errors occur when you use Publish Services in Lightroom Classic.

• For example, "An internal error has occurred: There is something wrong in CryptUnprotectData."

Solutions

Solution 1: Unauthorize then reauthorize the Publish Service plug-in.

Solution 2: Reset the cache in your browser, then reauthorize the Publish Service plug-in.

You can Google search or check your browser's Help documentation for instructions on how to clear the cache and cookies for your browser.

Most browsers have a clear browsing history option in the application menu or File menu. Otherwise, it's typically found in the browser's preferences. 

Solution 3: Set a different browser as default, then reauthorize the Publish Service plug-in.

Several users have reported that this step worked for them.

See your browser's documentation on how to change the default browser. Most browsers have an option to check for default browser at startup in the preferences.

Note: This step is necessary only during the plug-in authorization. Once the plug-in is authorized and functioning, you can revert to your preferred default browser.

Solution 4: (Windows) Run Lightroom as an Administrator, then reauthorize the Publish Service plug-in.