XML Parsing Error when Upgrading DotNetNuke

When upgrading DotNetNuke the typical method is to

  1. Backup your database and site
  2. Extract the Upgrade zip file into your root directory
  3. Open a browser
  4. Navigate to your site (http://domainname)

At this point the upgrade process begins and hopefully ends without error.  However, once in a while you get a message like this one (sorry, I forgot to grab a screen shot)

XML Parsing Error: Syntax Error
Location: http://{your domain}/Install/UpgradeWizard.aspx
Line Number 1, Column 1:
404: Page not found (http://{your domain}/Install/UpgradeWizard.aspx)

I’ve looked everywhere and can’t find the solution, but I did find the work around.  Follow this alternate upgrade path:

  1. Backup your database and site
  2. Extract the Upgrade zip file into your root directory
  3. Open a browser
  4. Navigate to http://{domainname}/install/install.aspx?mode=upgrade

That’s been working for me.  If you have another solution please share in the comments.

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