Symptoms

• You have created a Backup scanning plan
• After running the Backup scanning plan, it fails with "cause": "Failed to scan volume. Some error in AV scan callback" and "effect": "Failed to scan volume. Some error in AV scan callback"
  
  Example of full error message: click to expand

  "code": "error",
  
  "error": {
  
  "domain": "ATPAgent",
  
  "code": "BASVolumeScanError",
  
  "reason": "BASVolumeScanError",
  
  "context": {
  
  "errMsg": "Some error in AV scan callback"
  
  },
  
  "type": "error",
  
  "startTime": "2022-07-27T 04:45:01.954Z",
  
  "parentActivityId": "1229822716220014592",
  
  "isRoot": true,
  
  "cause": "Failed to scan volume. Some error in AV scan callback",
  
  "effect": "Failed to scan volume. Some error in AV scan callback",

   

Cause

A proxy server is possibly blocking the communication of the two processes.

Solution

1. Check if your machine has proxy configuration set via netsh:

• Open Elevated Command prompt: Start -> in search, type cmd -> right-click cmd.exe and select Run as administrator.
• Run commands: 

1. netsh
2. winhttp
3. show proxy

 

 

• If proxy settings are not set on the network host / Operating System level you'll receive message:

Current WinHTTP proxy settings: Direct access (no proxy server):

 

2. Import proxy setting for network host via netsh as follows:

• Run command: import proxy source=ie
• Updated proxy server will be displayed like this:

3. Reboot the host and run the Backup scanning plan.