# Error decompressing (v11.3)

**URL:** <https://kopia.discourse.group/t/error-decompressing-v11-3/1347>\
**Category:** Support\
**Created:** [August 14, 2022, 1:39pm UTC](https://kopia.discourse.group/t/error-decompressing-v11-3/1347 "2022-08-14T13:39:09Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![kopanla](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/kopanla/32/243_2.png) [@kopanla](https://kopia.discourse.group/u/kopanla)\
**Post date:** [August 14, 2022, 1:39pm UTC](https://kopia.discourse.group/t/error-decompressing-v11-3/1347/1 "2022-08-14T13:39:09Z")

</div>

I downloaded the latest version and verified my repo. And got these error messages at the end

```auto
ERROR error content k016c17d0c2187d0aad7e643864cc75fc is invalid: error decompressing: decompression error: CRC check failed
ERROR error content k030f71abf3e1d7c3dabb0fc7d4a7f6b1 is invalid: error decompressing: decompression error: CRC check failed
ERROR error content k03b7ecdeaabf7663358509ce094a6852 is invalid: error decompressing: decompression error: CRC check failed
...
Verified 254043 of 269761 contents (94.2%), 3 errors,

```

But when I ran it a second time, there was no error. This happens quite a lot with Kopia. I tested my system memory exhaustively and my RAM seems to be OK.

What else could be the problem? It “smells” like a Kopia bug.

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<div class="post-metadata">

**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\
**Post date:** [August 19, 2022, 4:36pm UTC](https://kopia.discourse.group/t/error-decompressing-v11-3/1347/2 "2022-08-19T16:36:13Z")

</div>

Given that this is after we’ve decrypted the content, it suggests some corruption at compression stage. What compression method are you using?

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<div class="post-metadata">

**Author:** ![kopanla](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/kopanla/32/243_2.png) [@kopanla](https://kopia.discourse.group/u/kopanla)\
**Post date:** [August 20, 2022, 4:57am UTC](https://kopia.discourse.group/t/error-decompressing-v11-3/1347/3 "2022-08-20T04:57:55Z")

</div>

> it suggests some corruption at compression stage.

Just to clarify. The repository is fine. There is no corruption. But sometimes the command

`kopia content verify --full`

returns errors.

But when I re-run the command immediately, there are no errors. That’s why I suspect there could be a bug somewhere 🙂

Compression method is gzip.

```auto
kopia policy show (global)

Compression:
  Compressor: gzip (defined for this target)
  Compress files regardless of extensions.
  Compress files of all sizes.

```