The type or namespace name ‘LayoutsPageBase’ does not exist

After creating an empty SharePoint 2010 solution in Visual Studio 2010 I added an Application Page to the project but compiling failed and gave me the following error:

The type or namespace name 'LayoutsPageBase' does not exist in the namespace 'Microsoft.SharePoint.WebControls' (are you missing an assembly reference?)

The reason for this was quite simple when I created the SharePoint Project I had chosen to deploy it as a Sandbox Solution and application pages are not supported in sandboxed solutions. Selecting the project properties and changing the Sandboxed Solution property to False and it compiled successfully.
 

Delete Column from a SharePoint List

If you want to delete a column from a SharePoint List. Following steps on powershel can help you well.

PS> $web = Get-SPWeb -identity http://your/site/name
PS> $list = $web.Lists["Your List Name"]
PS> $column = $list.Fields["Your Column Name"]
PS> $column.Hidden = $false
PS> $column.ReadOnlyField = $false
PS > $column.Update()
PS > $list.Fields.Delete($column)

Install-SPSolution Error

Install-SPSolution: Admin SVC must be running in order to create deployment timer job

When I was trying to deploy the SharePoint 2010 WSP on another server using PowerShell, I got this error when I tried to run the Install -SPSolution command saying that:
Install-SPSolution: Admin SVC must be running in order to create deployment timer job

So all you need to do is to go to the Services section in Administrative Tools and look for the service called SharePoint 2010 Administration, it was on manual start up, changed it to automatic and started it and gotten rid of this error.

Windows Server 2008 R2 – Event ID 8193

VSS Error in Windows Server 2008 R2 – Event ID 8193

After installing SharePoint 2010 enterprise and  setting the managed account to the specific services i become the following error on role fileservices


————————————————————————————————————————————————————–
Event Type:    Error
Event Source:    VSS
Event Category:    None
Event ID:    8193
Date:        12/5/2009
Time:        2:18:03 PM
User:        N/A
Computer:    ServerName
Description:
Volume Shadow Copy Service error: Unexpected error calling routine RegOpenKeyExW(-2147483646,SYSTEM\CurrentControlSet\Services\VSS\Diag,…).  hr = 0×80070005, Access is denied.
.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2d 20 43 6f 64 65 3a 20   – Code:
0008: 52 45 47 52 45 47 53 43   REGREGSC
0010: 30 30 30 30 30 31 35 36   00000156
0018: 2d 20 43 61 6c 6c 3a 20   – Call:
0020: 52 45 47 52 45 47 53 43   REGREGSC
0028: 30 30 30 30 30 31 32 39   00000129
0030: 2d 20 50 49 44 3a 20 20   – PID:
0038: 30 30 30 30 36 38 36 30   00006860
0040: 2d 20 54 49 44 3a 20 20   – TID:
0048: 30 30 30 30 39 30 39 36   00009096
0050: 2d 20 43 4d 44 3a 20 20   – CMD:
0058: 22 43 3a 5c 50 72 6f 67   “C:\Prog
0060: 72 61 6d 20 46 69 6c 65   ram File
0068: 73 5c 43 6f 6d 6d 6f 6e   s\Common
0070: 20 46 69 6c 65 73 5c 4d    Files\M
0078: 69 63 72 6f 73 6f 66 74   icrosoft
0080: 20 53 68 61 72 65 64 5c    Shared\
0088: 57 65 62 20 53 65 72 76   Web Serv
0090: 65 72 20 45 78 74 65 6e   er Exten
0098: 73 69 6f 6e 73 5c 31 32   sions\12
00a0: 5c 42 49 4e 5c 6d 73 73   \BIN\mss
00a8: 65 61 72 63 68 2e 65 78   earch.ex
00b0: 65 22 20 20 20 20 20 20   e“
00b8: 2d 20 55 73 65 72 3a 20   – User:
00c0: 4e 61 6d 65 3a 20 4e 49   Name: ServiceAccountName
00c8: 48 5c 4e 49 4e 44 53 53
00d0: 50 50 52 57 53 45 41 2c   ,
00d8: 20 53 49 44 3a 53 2d 31    SID:S-1
00e0: 2d 35 2d 32 31 2d 31 32   -5-21-12
00e8: 36 30 34 32 38 36 2d 36   604286-6
00f0: 35 36 36 39 32 37 33 36   56692736
00f8: 2d 31 38 34 38 39 30 33   -1848903
0100: 35 34 34 2d 34 30 36 35   544-4065
0108: 35 31 20 20 20 20 20 20   51
———————————————————————————————————————————-
After searching throw internet i found the reason of error on this blog.The reason was a permission peroblem of my serviceAccount. The account was trying to access the VSS registry key and it was failing due to lack permissions.


So here is the fix, just type in regedit.exe in run and navigate the VSS registry key


HKLM\SYSTEM\CurrentControlSet\Services\VSS\Diag


Right click on Diag, go to permissions and give the service account listed under details tab in the error with full control permissions.
This should fix the error, you can check this by restarting the office search service by using

net stop oSearch

net start oSearch

or


stsadm -o osearch -action stop
stsadm -o osearch -action start

If you still run into the same issue, then try the following:

psconfig -cmd services -install

This will configure SharePoint search again.