Error when trying to upload license key

[Orange]

I received a message that the key is invalid. When I upload a license key file I get the Following error:

Error: error: basic_ios::clear

The server has been online for the past year or so and it's the first time I have this kind of problem.
Any help would be appreciated.

 

[IgorG]

Make sure that you have enough free diskspace on your server.

 

[Orange]

How can I check this without Plesk ? (license key has expired). I have only access to :
Order Plesk Add-Ons; Order Plesk Upgrades; Retrieve Keys; Install Key; Roll Back Key
Thanks

 

[IgorG]

You can check it directly on your Windows server with Plesk. Login to this server with RDP and check it.