Getting an error which impacts the site from loading. Using the Umbraco version 7.7.2 and followed the configuration settings as recommended. Need your help/suggestions to fix the below critical issue.**

Lock obtain timed out: NativeFSLock@D:\home\site\wwwroot\AppData\TEMP\ExamineIndexes\InternalMember\Index\write.lock: System.IO.IOException: The process cannot access the file 'D:\home\site\wwwroot\AppData\TEMP\ExamineIndexes\InternalMember\Index\write.lock' because it is being used by another process. at System.IO.Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITYATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access) at Lucene.Net.Store.NativeFSLock.Obtain() at Lucene.Net.Store.Lock.Obtain(Int64 lockWaitTimeout) at UmbracoExamine.LocalStorage.MultiIndexLock.Obtain(Int64 lockWaitTimeout) at Lucene.Net.Index.IndexWriter.Init(Directory d, Analyzer a, Boolean create, Boolean closeDir, IndexDeletionPolicy deletionPolicy, Boolean autoCommit, Int32 maxFieldLength, IndexingChain indexingChain, IndexCommit commit) at Lucene.Net.Index.IndexWriter..ctor(Directory d, Analyzer a, IndexDeletionPolicy deletionPolicy, MaxFieldLength mfl) at UmbracoExamine.BaseUmbracoIndexer.CreateIndexWriter() at Examine.LuceneEngine.Providers.LuceneIndexer.EnsureIndex(Boolean forceOverwrite) in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\LuceneIndexer.cs:line 661 at Examine.LuceneEngine.Providers.LuceneIndexer.RebuildIndex() in C:\projects\examine-qvx04\src\Examine\LuceneEngine\Providers\LuceneIndexer.cs:line 749 at UmbracoExamine.BaseUmbracoIndexer.RebuildIndex() at UmbracoExamine.UmbracoContentIndexer.RebuildIndex() at Umbraco.Web.WebBootManager.<>c.<InitializeResolvers>b164() at Umbraco.Core.Sync.DatabaseServerMessenger.Initialize() at Umbraco.Core.Sync.DatabaseServerMessenger.Boot() at Umbraco.Web.BatchedDatabaseServerMessenger.Startup() at Umbraco.Web.BatchedDatabaseServerMessengerStartup.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) at Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) at Umbraco.Core.CoreBootManager.<Complete>b_380(IApplicationEventHandler x) at Umbraco.Core.EnumerableExtensions.ForEach[TItem](IEnumerable1 items, Action1 action) at Umbraco.Core.CoreBootManager.Complete(Action1 afterComplete) at Umbraco.Web.WebBootManager.Complete(Action1 afterComplete) at Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) at Umbraco.Core.UmbracoApplicationBase.Application_Start(Object sender, EventArgs e)

The process cannot access the file 'D:\home\site\wwwroot\AppData\TEMP\ExamineIndexes\InternalMember\Index\write.lock' because it is being used by another process. at System.IO.Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITYATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access) at Lucene.Net.Store.NativeFSLock.Obtain()