Issue: Upgrader stuck at 1%

Check your browser console for messages.

VaultWiki has internal callbacks during the auto-mode upgrade process (loading the upgrade script hosted on your site within an iframe). I don't know why this would be blocked unless you have configured your firewall to block iframes.

However, if you are seeing Javascript errors, it is possible that your CDN cached your Javascript files while you where uploading them. This has happened to you in the past after upgrading XenForo. Similarly, when upgrading VaultWiki, you can use its vault/config.php VW_CDN_EXPIRER constant (change it to a different value) to force your CDN to re-pull the files now that you are done uploading.

This is in the console on the upgrader welcoem page:
The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it

This at each step:
An unbalanced tree was written using document.write() causing data from the network to be reparsed. For more information https://developer.mozilla.org/en/Opt...lative_Parsing

But its now progressing.

If you are accessing the upgrade via http://ipaddress, but your forum's base URL is actually set to http://yourforum.com, and ipaddress would block an outgoing call to yourforum.com, then it is possible this is what you were facing. Also, if ipaddress is not listed in the forum's POST Referrer Whitelist settings, then the forum might be refusing to process the request at that end. In either case, your firewall would be configured to block itself. If neither one is canonized, ideally ipaddress and yourforum.com would whitelist each other.