Title: Backblaze B2 connection error
Last modified: June 26, 2020

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# Backblaze B2 connection error

 *  Resolved [noelspringer](https://wordpress.org/support/users/noelspringer/)
 * (@noelspringer)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/)
 * I have set up a Backblaze B2 account and tested the credentials with an s3 command
   line program. All good.
 * I also tested UpdraftPlus with an AWS bucket and that works well.
 * When I set up a connection to Backblaze B2 using the S3 generic option and run
   the S3 Settings test I get the following error:
 * `S3 settings test result: Failure: We successfully accessed the bucket, but the
   attempt to create a file in it failed. Please check your access credentials. (
   UpdraftPlus_S3::putObject(): [InvalidRequest] The V2 signature authorization 
   mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256)`
 * Can this be resolved?
 * Cheers,
    Noel

Viewing 9 replies - 1 through 9 (of 9 total)

 *  Plugin Contributor [bcrodua](https://wordpress.org/support/users/bcrodua/)
 * (@bcrodua)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13037884)
 * Hi,
 * Can you please try to Wipe settings from UpdraftPlus > Advanced tools > Wipe 
   settings, Click the Wipe settings button, Then go back to UpdraftPlus > Settings,
   authenticate to your AWS account, save the settings.
 * Check if above steps helps to fix the issue.
 * Regards,
    Bryle
 *  Thread Starter [noelspringer](https://wordpress.org/support/users/noelspringer/)
 * (@noelspringer)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13042686)
 * Hi [@bcrodua](https://wordpress.org/support/users/bcrodua/),
 * Thanks for the suggestion. The error message remains the same.
 * BTW this is for a Backblaze B2 account and not an AWS S3 account.
 * I am adding my credentials to the S3 Compatible (Generic) settings.
 * Cheers,
 * Noel
 *  Plugin Contributor [bcrodua](https://wordpress.org/support/users/bcrodua/)
 * (@bcrodua)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13042894)
 * Hi [@noelspringer](https://wordpress.org/support/users/noelspringer/)
 * May I know what PHP and UpdraftPlus plugin version are you using, please?
 * Best Wishes,
    Bryle
 *  Thread Starter [noelspringer](https://wordpress.org/support/users/noelspringer/)
 * (@noelspringer)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13044082)
 * Hi [@bcrodua](https://wordpress.org/support/users/bcrodua/),
 * PHP version 7.4.7 on a local Debian box.
    UpdraftPlus version 1.16.25
 * Cheers,
 * Noel
 *  Thread Starter [noelspringer](https://wordpress.org/support/users/noelspringer/)
 * (@noelspringer)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13044111)
 * Hi [@bcrodua](https://wordpress.org/support/users/bcrodua/),
 * I don’t know if this is part of the problem but in the browser’s Inspector Console
   for the UpdraftPlus admin settings page there is a message about an empty value.
   It’s not a warning and I’m not sure if I should post it here.
 * The browser is Firefox Developer Edition.
 * Cheers,
 * Noel
 *  Plugin Contributor [bcrodua](https://wordpress.org/support/users/bcrodua/)
 * (@bcrodua)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13048233)
 * Hi [@noelspringer](https://wordpress.org/support/users/noelspringer/)
 * Apologies for the late reply.
 * Yes, please can you post the screenshot here?
 * Thanks,
    Bryle
 *  Plugin Author [David Anderson / Team Updraft](https://wordpress.org/support/users/davidanderson/)
 * (@davidanderson)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13068554)
 * Hi,
 * This is the lead developer of UD here – I just want to clarify something. We’ve
   never tested or officially supported Backblaze B2 via their S3 API (it wasn’t
   around until relatively recently). If you can get it to work in the free version,
   then great. But otherwise, we provide an official paid add-on that uses their
   own API, which is fully supported.
 * David
 *  Thread Starter [noelspringer](https://wordpress.org/support/users/noelspringer/)
 * (@noelspringer)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13070307)
 * Hi [@davidanderson](https://wordpress.org/support/users/davidanderson/) and [@bcrodua](https://wordpress.org/support/users/bcrodua/),
 * Thanks for the clarification David; much appreciated.
 * All good regarding the paid version. It’s good value!
 * Cheers,
 * Noel
 *  [John](https://wordpress.org/support/users/kanubee/)
 * (@kanubee)
 * [5 years, 10 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13182901)
 * I’ve experienced the same error and I believe its because UpdraftPlus S3 signatures
   are version 2 (V2) as indicated in the error message. Whereas, Backblaze states
   that only version 4 (V4) signatures are currently supported.
 * So, what about UpdrafPlus upgrading its version of authentication to version 
   4?

Viewing 9 replies - 1 through 9 (of 9 total)

The topic ‘Backblaze B2 connection error’ is closed to new replies.

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## Tags

 * [backblaze](https://wordpress.org/support/topic-tag/backblaze/)
 * [s3](https://wordpress.org/support/topic-tag/s3/)

 * 9 replies
 * 4 participants
 * Last reply from: [John](https://wordpress.org/support/users/kanubee/)
 * Last activity: [5 years, 10 months ago](https://wordpress.org/support/topic/backblaze-b2-connection-error/#post-13182901)
 * Status: resolved