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enter image description hereParser Error Message: The base type 'Microsoft.Office.Server.Search.Internal.UI.SearchFarmDashboard' is not allowed for this page. The type Microsoft.Office.Server.Search.Internal.UI.SearchFarmDashboard, Microsoft.Office.Server.Search, Version=16.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c could not be found or it is not registered as safe.

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  • What have you done on SharePoint farm recently? e.g. Windows update?
    – Mark L
    Aug 20, 2021 at 1:57
  • updated SharePoint to the latest version, after the update the search for new information disappeared, the old one is looking for and the new one is not Aug 20, 2021 at 5:42
  • Have you run the Configuration Wizard on each server?
    – Mark L
    Aug 20, 2021 at 6:37
  • Is there any update?Has your database account or password changed recently? Aug 25, 2021 at 8:23

1 Answer 1

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You might hit the newest security limitations which have been applied with June 2021 Cumulative Update.

Check your ULS-Logs for Event-ID 8gaol.

For each third-party assembly that needs to be enabled, add an entry that has an assembly full name in the AllowAccessSensitivePropertiesAssemblies section:

<SharePoint>
<SafeMode>
<AllowAccessSensitivePropertiesAssemblies>
<AllowAccessSensitivePropertiesAssembly
Assembly="XXX, Version=XXX, Culture=XXX, PublicKeyToken=XXXX" />
</AllowAccessSensitivePropertiesAssemblies>

…
</SafeMode>
…
</SharePoint>

https://blog.stefan-gossner.com/2021/08/10/common-error-unable-to-access-this-sensitive-property-8gaol-logged-in-uls-after-installing-june-2021-cu-or-later/

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