Why do I experience "Fail to open" when I scan my respository?

I have created a repository and scanned result. But it responses "Failed to Open" for 10/11 of the items.

It is not my first time to experience this result, wonder if you have any ideas on the mentioned issues please?

Steps:

  1. Click "Create" in REGISTERED REPOSITORIES
  2. Create new repository with below details:
    1. Name: test_rf3
    2. NETWORK PATHS: \\172.30.34.150\testing files\quick one
    3. ANALYSIS:
      1. ANALYSIS TYPE: Content
      2. CAPTURE PERMISSION AND OWNERSHIP : Yes
      3. ANALYZE SUBITEMS: Yes
      4. CATEGORIES ITEMS: No
      5. EDUCTION: Yes
    4. GRAMMARS:
      1. HKID
    5. MAX MATCHES: 10000

When I click save and restart the connector, the scan result is "FAILED TO OPEN" 

Even if I have below changes:

  1. ANALYSIS TYPE: Metadata only
  2. CATEGORIES ITEMS: Yes

But the scanned result is the same. "FAILED TO OPEN" for 10 out of 11 items. 

Anyone have ideas on this issue please?