i Have seen this quite a few times.
I Have lots of errors like this:
[MissingWebPart] WebPart class [b2faa275-7008-740a-a014-0055b7420d15] (class [Microsoft.SharePoint.Portal.WebControls.SiteFeedWebPart] from assembly [Microsoft.SharePoint.Portal, Version=15.0.0.0, Culture=neutral, PublicKeyToken=xxxxx]) is referenced [2] times in the database [WSS_DBName], but is not installed on the current farm. Please install any feature/solution which contains this web part. One or more web parts are referenced in the database [WSS_DBName], but are not installed on the current farm. Please install any feature or solution which contains these web parts.
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Here is a very handy site with a solution but did not work for me.
http://www.jeffscorner.org/blog/post/SharePoint-2013-%E2%80%93-Missing-server-side-dependencies-%E2%80%93-MissingWebPart-Webpart-class.aspx
First Run this script in SQL Query Analyzer:
Change DB Name and the ID to the one's in the error message
use [SharePoint_AdminContent_(guid)]
select
DirName, LeafName
from
dbo.AllDocs
where
id
in
(
select
tp_PageUrlID
from
dbo.AllWebParts
where
lower
(tp_WebPartTypeId) =
'28c23aec-2537-68b3-43b6-845b13cea19f'
)
Now You need to figure out in which site collection it is.
Hopefully you restrict your DB's to only have one Site collection, then it is easy.
If not...i Dont know. i Limit it.
So if you go to view All site collections and you choose your site collection it will give you the url for your site collection.
Ok, so now you need to paste the DirName above to the end of the url in your site.
Mine
http://url/sites/team/
The errors go away and come back again, will have to look at this again later.
If someone can see where i go wrong please let me know.
If someone can see where i go wrong please let me know.