Failed to initiate the upgrade sequence. An exception of type System.IO.IOException was thrown.

"Failed to upgrade SharePoint Products."

I have installed the office web app patch & re-run the configuration wizard when I encountered this exception 

Please Note the GUID is vital for clearing cache.



1. Stop the Timer service. To do this, follow these steps:
   
   1. Click Start, point to Administrative Tools, and then click Services.
   2. Right-click SharePoint 2010 Timer, and then click Stop.
   3. Close the Services console.
2. On the computer that is running Microsoft SharePoint Server 2010 and on which the Central Administration site is hosted, click Start, click Run, type explorer, and then press ENTER.
3. In Windows Explorer, locate and then double-click the following folder:
4. %SystemDrive%\ProgramData\Microsoft\SharePoint\Config\GUID
5. Notes
1. The %SystemDrive% system variable specifies the letter of the drive on which Windows is installed. By default, Windows is installed on drive C.
2. The GUID placeholder specifies the GUID folder. There may be more than one of these.
3. The ProgramData folder may be hidden. To view the hidden folder, follow these steps:
1. On the Tools menu, click Folder Options.
2. Click the View tab.
3. In the Advanced settings list, click Show hidden files and folders under Hidden files and folders, and then click OK.
4. You can also simply type this directly in the path if you do not want to show hidden files and folders.
6. Back up the Cache.ini file. (Make a copy of it. DO NOT DELETE THIS FILE, Only the XML files in the next step)
7. Delete all the XML configuration files in the GUID folder (DO NOTE DELETE THE FOLDER). Do this so that you can verify that the GUID folders content is replaced by new XML configuration files when the cache is rebuilt.
   Note When you empty the configuration cache in the GUID folder, make sure that you do NOTdelete the GUID folder and the Cache.ini file that is located in the GUID folder.
8. Double-click the Cache.ini file.
9. On the Edit menu, click Select All.
10. On the Edit menu, click Delete.
11. Type 1, and then click Save on the File menu. (Basically when you are done, the only text in the config.ini file should be the number 1)
12. On the File menu, click Exit.
13. Start the Timer service. To do this, follow these steps:
    1. Click Start, point to Administrative Tools, and then click Services.
    2. Right-click SharePoint 2010 Timer, and then click Start.
    3. Close the Services console.
14. Note The file system cache is re-created after you perform this procedure. Make sure that you perform this procedure on all servers in the server farm.
15. Make sure that the Cache.ini file in the GUID folder now contains its previous value. For example, make sure that the value of the Cache.ini file is not 1.
16. Check in the GUID folder to make sure that the xml files are repopulating. This may take a bit of time.

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SharePoint User Profile Synchronization.

SharePoint portals are tightly integrated with Active Directory and since SharePoint has a additional Database to maintain user profiling, However many times user alias names are shown inconsistent on welcome.ascx section For some it's show :

•         first name , last name

•         last name, first name 

•         domain\userID 

 This means AD-Profile Synchronization is not enabled or not happening for some reasons.

SOLUTION:

Manually run following SharePoint PowerShell Command which synchronizes AD Accounts.

Get-SPUser –Web http://SharePointServer | Set-SPUser –SyncFromAD

Execute command for each Site collection to reflect these changes.  

SharePoint Error :The form cannot be rendered. This may be due to a misconfiguration of the Microsoft SharePoint Server State Service

InfoPath forms are giving following exception when trying to activate or add any new workflow

“The form cannot be rendered. This may be due to a misconfiguration of the Microsoft SharePoint Server State Service. For more information, contact your server administrator.”

 Solution : 

As I checked for the found State Service was not started, in order to start this service go to:

1. Central administration  
2. Configuration Wizards 
3. Click “Launch the Farm Configuration Wizard” 
4. click  “Start the Wizard”

To confirm state services is started go to
1. Application Management >>
2. Manage service applications you will see the status. 

Central Administration returns blank page after installation on Windows 7

Installation of SharePoint 2010 on Windows Server seems to be much easier than installing on Windows-7 machine to be loaded with SharePoint 2010 as a developer machine.

Now when i click on central admin blank page is returned.
No Error logs in IIS.
However I checked IIS Web-site & Application Pool everything seems to be running fine & was registried with proper service account.
Also check all SQL & Sharepoint Service which were also properly started.

Overall there was really no way anything was missed.
However after long search and troubleshooting i found windows features are required to be executed Click here to check steps by MSDN

Following command needs to be executed on Command Prompt as administrator:

start /w pkgmgr /iu:IIS-WebServerRole;IIS-WebServer;IIS-CommonHttpFeatures;IIS-StaticContent;IIS-DefaultDocument;IIS-DirectoryBrowsing;IIS-HttpErrors;IIS-ApplicationDevelopment;IIS-ASPNET;IIS-NetFxExtensibility;IIS-ISAPIExtensions;IIS-ISAPIFilter;IIS-HealthAndDiagnostics;IIS-HttpLogging;IIS-LoggingLibraries;IIS-RequestMonitor;IIS-HttpTracing;IIS-CustomLogging;IIS-ManagementScriptingTools;IIS-Security;IIS-BasicAuthentication;IIS-WindowsAuthentication;IIS-DigestAuthentication;IIS-RequestFiltering;IIS-Performance;IIS-HttpCompressionStatic;IIS-HttpCompressionDynamic;IIS-WebServerManagementTools;IIS-ManagementConsole;IIS-IIS6ManagementCompatibility;IIS-Metabase;IIS-WMICompatibility;WAS-WindowsActivationService;WAS-ProcessModel;WAS-NetFxEnvironment;WAS-ConfigurationAPI;WCF-HTTP-Activation;WCF-NonHTTP-Activation

Hope this help you too.
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