Answers.Body: <p>Yes. But make sure you are on 4.2.9, because</p>
  
  <blockquote>
    <p>"If you are starting from a version prior to 4.2.9 you should upgrade to the latest 4.2 version as an interim step, as the latest version does not contain upgrade code going back that far."</p>
  </blockquote>
  
  <p>and </p>
  
  <blockquote>
    <p>"You can make big jumps in one upgrade (e.g. 4.5.2 to 4.7.20) without
    needing to apply all the upgrades in between."</p>
  </blockquote>
  
  <p>The above quotes are from, and see more at:  <a href="https://docs.civicrm.org/sysadmin/en/latest/upgrade/" rel="nofollow noreferrer">https://docs.civicrm.org/sysadmin/en/latest/upgrade/</a> . </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-03T10:12:00.230Z
Answers.Text: Ok. I will try. Thank you
Answers.UserDisplayName: Prasad kanalli
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-03T17:47:46.830Z
Answers.Text: You're welcome.
Answers.UserDisplayName: Joe McLaughlin
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-03T20:49:27.200Z
Answers.Text: and Prasad if that answer ^^^ works for you, please choose it as 'correct'/preferred, whatever :) . Thanks.  I'm trying to 'level up'.
Answers.UserDisplayName: Joe McLaughlin
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-10T12:05:59.500Z
Answers.Text: I am getting error as "Found installation canary. This suggests that something went wrong with tracking installation process. Please post to forum or JIRA." while upgrading this
Answers.UserDisplayName: Prasad kanalli
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-12T09:48:50.667Z
Answers.Text: Aha Prasad, hmm. Also post the error message in town square channel at chat.civicrm.org .
Answers.UserDisplayName: Joe McLaughlin
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-12T16:37:48.337Z
Answers.Text: @prasad kanalli can you confirm the steps you're taking leading up to seeing the [installation canary](https://github.com/civicrm/civicrm-core/blob/8b9a8f4abb25cfa7a498eaaa3e459e4d313e350a/Civi/Core/InstallationCanary.php) error? I don't expect it to show up during *upgrade*. Unfortunately you'll need to do this by posting comments until you get a few more reputation points on this website 
Answers.UserDisplayName: Chris Burgess
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-12T16:41:06.267Z
Answers.Text: See https://civicrm.stackexchange.com/questions/33312/civicrm-upgrade-from-4-2-9-to-4-7-23 - Jon has given more detail over there. Looks like you may need to solve  https://civicrm.stackexchange.com/questions/33215/civicrm-migration-giving-foreign-key-consrtant-error as well first?
Answers.UserDisplayName: Chris Burgess
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-13T10:45:18.420Z
Answers.Text: @prasadkanalli it is likely that some upgrader steps may fail.  If that happens you should manually apply to the next release and then continue with the upgrade.  Make sure you have backups!
Answers.UserDisplayName: Matthew Wire
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-10-03T09:34:48.850Z
Answers.LastActivityDate: 2019-10-03T09:34:48.850Z
Answers.UserDisplayName: Joe McLaughlin
Body: <p>I am planning to upgrade civicrm from version 4.2.9 to 4.7.23. For this can I directly upgrade it from 4.2.9 to 4.7.23? Or any other version I have to upgrade first and then to move to 4.7.23. Please suggest me steps for this.</p>
  
  <p>Thanks in advance. </p>
  
Tags: <webform-civicrm>
Title: Civicrm Upgrade to 4.7.23
ThreadText: # Civicrm Upgrade to 4.7.23
  
  (Asked by: username_0 on 2019-10-03)
  
  I am planning to upgrade civicrm from version 4.2.9 to 4.7.23. For this can I directly upgrade it from 4.2.9 to 4.7.23? Or any other version I have to upgrade first and then to move to 4.7.23. Please suggest me steps for this.
  
  Thanks in advance.
  
  **Tags:** webform-civicrm
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-10-03. Score: 1
  
  Yes. But make sure you are on 4.2.9, because
  
  > "If you are starting from a version prior to 4.2.9 you should upgrade to the latest 4.2 version as an interim step, as the latest version does not contain upgrade code going back that far."
  
  and
  
  > "You can make big jumps in one upgrade (e.g. 4.5.2 to 4.7.20) without
  > needing to apply all the upgrades in between."
  
  The above quotes are from, and see more at: <https://docs.civicrm.org/sysadmin/en/latest/upgrade/> .
  
  > **Comments:**
  > **username_0**: Ok. I will try. Thank you  
  > **username_1**: You're welcome.  
  > **username_1**: and username_0 if that answer ^^^ works for you, please choose it as 'correct'/preferred, whatever :) . Thanks.  I'm trying to 'level up'.  
  > **username_0**: I am getting error as "Found installation canary. This suggests that something went wrong with tracking installation process. Please post to forum or JIRA." while upgrading this  
  > **username_1**: Aha username_0, hmm. Also post the error message in town square channel at chat.civicrm.org .  
  > **username_2**: @username_0 username_0 can you confirm the steps you're taking leading up to seeing the [installation canary](https://github.com/civicrm/civicrm-core/blob/8b9a8f4abb25cfa7a498eaaa3e459e4d313e350a/Civi/Core/InstallationCanary.php) error? I don't expect it to show up during *upgrade*. Unfortunately you'll need to do this by posting comments until you get a few more reputation points on this website   
  > **username_2**: See https://civicrm.stackexchange.com/questions/33312/civicrm-upgrade-from-4-2-9-to-4-7-23 - Jon has given more detail over there. Looks like you may need to solve  https://civicrm.stackexchange.com/questions/33215/civicrm-migration-giving-foreign-key-consrtant-error as well first?  
  > **username_3**: @username_0 it is likely that some upgrader steps may fail.  If that happens you should manually apply to the next release and then continue with the upgrade.  Make sure you have backups!  
  
  ---
  
  