When can you run Quickbooks connection diagnostic tool

1
When to run QuickBooks connection diagnostic
tool?

• The connection diagnostic tool is useful in
  certain situations. Check out the following
  situations
• The QuickBooks database error may appear when you
  run into problems with the database.
• Errors related to the Windows Firewall.
• QuickBooks errors like those in the 6000 series.
• When a virus affects the QuickBooks functions.
• An employee makes certain entries that don't get
  updated on QuickBooks using the connection
  diagnostic tool.
• Damaged or corrupted QuickBooks files.
• If there are multi-user errors, which usually
  fall under the H series errors in QuickBooks.

2
What Issues QuickBooks connection diagnostic tool
fix?

• QuickBooks Connection Diagnostic Tool can fix the
  following issues
• Access to QuickBooks database is denied
• Windows firewall incorrectly configured
• You have a blank list of vendors and customers in
  your accounting software
• The Employees List is missing entries
• Damaged or corrupted QuickBooks Company files
• Company files missing or compromised