The negotiation of encryption algorithm is failed

KB ID: 1890
Product: Veeam Backup & Replication
Version: 6.x, 7.x, 8.x
Published: 2014-05-30
Last Modified: 2020-08-13
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please try again later.

Challenge

When trying to restore files from a Veeam appliance to the original location using Other OS restore, the following error is received: "The negotiation of encryption algorithm is failed"

Cause

Between Linux flavors, certain Ciphers may be enabled or disabled by default or by local policy.

Solution

8.0
 
Install the latest update for Veeam Backup and Replication. This enables aes128-ctr, aes192-ctr, aes256-ctr, aes192-cbc and aes256-cbc in addition to the already existing 3des-cbc, blowfish-cbc, and aes128-cbc.
 
A more secure Ciphers line would be:
 
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes192-cbc,aes256-cbc
 
6.x and 7.x:
 
Make sure that at least one of the following algorithms are included on your Ciphers line:
 
Ciphers 3des-cbc,blowfish-cbc,aes128-cbc
 
 

More information

If your security policy requires deleting this string, then it needs to be re-added every time you need to restore files to the original location.
 
Click here to send feedback regarding this KB, or suggest content for a new KB.
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please try again later.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case

By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please try again later.