Http request user-agent header's value of Sharepoint 2013 Search crawler

Can be found here:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\15.0\Search\Global\Gathering Manager in UserAgent key.

By default it's set to Mozilla/4.0 (compatible; MSIE 4.01; Windows NT; MS Search 6.0 Robot in Sharepoint 2013.

Get rid of OpenQuery Failed with status ID: 0x800007d0 in ULS

After provisioning Search Application you might see a lots of errors in ULS:

mssearch.exe (0x13C0)                    0x1250 SharePoint Server              Unified Logging Service        9saa Unexpected OpenQuery Failed with status ID: 0x800007d0. QueryPath: \Search Gatherer Projects - SharePointServerSearch(Search_Service_Application_1_0_Portal_Content)\Transactions Completed. instanceHandle: 3.
mssearch.exe (0x13C0)                    0x1250 SharePoint Server              Unified Logging Service        9saa Unexpected OpenQuery Failed with status ID: 0x800007d0. QueryPath: \Search Gatherer Projects - SharePointServerSearch(Search_Service_Application_1_0_Portal_Content)\Transactions In Progress. instanceHandle: 3. 

To fix the problem follow the step below:

1. Fix Usage and Health Data Collection Service Application Proxy as described here: http://tristanwatkins.com/fixing-the-usage-and-health-data-collection-sa/
2. Check if an account of crawl component is a member of "Performance Monitor Users" local security group.

Fix Usage and Health Data Collection Service Application Proxy

1. start Sharepoint management shell as administrator
2. run the script:

$sap = Get-SPServiceApplicationProxy | where-object {$_.TypeName -eq “Usage and Health Data Collection Proxy”} $sap.Provision()
3. restart IIS

4. open Search Service Administration in SP Central Administration
5. click on Index Reset, then Reset Now
6. check the ULS if the error dissapeared.

SPList.ParentWebUrl != SPList.ParentWeb.Url

These two proerties looks similar and expected to be equal, but they don't.

SPList.ParentWebUrl   - server relative url;
SPList.ParentWeb.Url - absolute URL for the website.

SPList.ParentWebUrl != SPList.ParentWeb.Url :)

URL format in New-SPSite

When creating a new site collection using PowerShell:

New-SPSite $siteCollUrl -Name $siteCollName -Template $template -OwnerAlias $siteCollAdmin –Language $siteCollLanguage

you might get an exception:

New-SPSite : The URL '/sites/sitecollname/' is invalid.  It may contain illegal characters, or be too long.

The problem is caused by the trailing slash in the new site collection URL. It should be removed.

Sharepoint 2013 + EntLib 5 Validation block

Using Enterprise Library 5 with Sharepoint 2013 could be a tricky. A strange exception is thrown from Validation block of EntLib when it's used from Sharepoint:

Microsoft.Practices.ServiceLocation.ActivationException: Activation error occured while trying to get instance of type ValidatorFactory, key "" ---> Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "Microsoft.Practices.EnterpriseLibrary.Validation.ValidatorFactory", name = "(none)".  Exception occurred while: while resolving.  Exception is: InvalidOperationException - The type ValidatorFactory does not have an accessible constructor.  -----------------------------------------------  At the time of the exception, the container was:      Resolving Microsoft.Practices.EnterpriseLibrary.Validation.ValidatorFactory,(none)   ---> System.InvalidOperationException: The type ValidatorFactory does not have an accessible constructor.

The solution is to add the following configuration elements into web.config:

1. Add a section declaration into <configSections>

<section name="typeRegistrationProvidersConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.TypeRegistrationProvidersConfigurationSection, Microsoft.Practices.EnterpriseLibrary.Common, Version=5.1.508.0, Culture=neutral, PublicKeyToken=3602034a0e4e3f13" />

2. Add the section into <configuration>

<typeRegistrationProvidersConfiguration>
    <remove name="Validation" />
    <add name="Validation" providerType="Microsoft.Practices.EnterpriseLibrary.Validation.Configuration.ValidationTypeRegistrationProvider, Microsoft.Practices.EnterpriseLibrary.Validation, Version=5.1.508.0, Culture=neutral, PublicKeyToken=3602034a0e4e3f13" />
  </typeRegistrationProvidersConfiguration>