Sometimes QuickBooks Error 6000, 301 can occur due to presence of encryption software in the system or due to damaged Network data field.
To fix QuickBooks Error 6000, 301:
Rename the .tlg , .Nd and .DSN files.
Update Quickbooks.
Hopefully QuickBooks Error Code 6000, 301 is fixed by now!! If the QuickBooks Error 6000, 301 still bothers you, connect to QBSSolved at +1(888) 910 1619