Symptoms:
- Response was extremely slow
- Only affecting a single Site Collection
- No errors in the Event Viewer
- Still able to browse the site structure through SharePoint Designer
- Errors on the screen said something like:
- Error occurred while rendering navigation requested url
- An unexpected error occured while manipulating the navigational structure of this Web.
- Noticed that, when a page did load, it had dozens (hundreds?) of Navigation nodes on Current navigation and Global Navigation
Suspected Cause:
Thought that maybe the reason this was
taking so long to load a page, was that the Navigation is corrupt and it was
trying to build out this enormous navigation structure.
To fix:
Open PowerShell on the server, check the size of those
objects at the top level:
$siteUrl = "http://WebAppURL/sites/scname"
$spWeb = Get-SPWeb $siteUrl
$spWeb.Navigation.QuickLaunch | ft Title
$spWeb.Navigation. TopNavigationBar | ft Title
Then, if this looks like the problem, delete the QuickLaunch
Nodes, then delete the TopNavigationBar Nodes, as required:
$siteUrl = "http://WebAppURL/sites/scname"
$spWeb = Get-SPWeb $siteUrl
Foreach($node in ($spWeb.Navigation.QuickLaunch))
{
write-host
"The node title is "$node.Title
$node.Delete()
}
$spWeb.Dispose()
$siteUrl = "http://WebAppURL/sites/scname"
$spWeb = Get-SPWeb $siteUrl
Foreach($node in ($spWeb.Navigation.TopNavigationBar))
{
write-host
"The node title is "$node.Title
$node.Delete()
}
$spWeb.Dispose()
Note that I had to run these commands several times.
It looked like it would delete 80% of them, then get an error. If this
happens, then just run it again:
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