> Source: [sk177984](https://support.checkpoint.com/results/sk/sk177984)

# sk177984 - IoC feed fails to parse, "Feed format problem. Feed format not supported."

| Property | Value |
|----------|-------|
| Solution ID | sk177984 |
| Date Created | 2022-02-27 |
| Last Modified | 2023-10-26 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.10 (EOS) |

## Symptoms

- * After an upgrade to Check Point R81.10, a standard Indicator of Compromise (IoC) feed with IP addresses and IP Classless Inter-Domain Routing (CIDR) entries fails to parse.
* This error message appears:

  ```
  Feed format problem. Feed format not supported" severity 0
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] CIOCLogger[115] ::log: [INFO] CplogClientSendLog sucess
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] #############################################
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] Feed status XXXX :: IOC_SUCCESS
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] #############################################
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] #############################################
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] Feed status XXXX :: IOC_FAILED_WHILE_PARSING
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] #############################################
  [18461 4113282944]@GATEWAY NAME[DATE AND TIME] Feed log External IOC - Partial success
  ```

* Other IoC feeds with domains work as expected.

## Solution

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