Event ID 8 (volsnap)

If the eventlog has an entry like this (German Entry):

Das Zeitlimit für den Lösch- und Speicherschreibvorgang für Volume "D:" wurde beim Warten auf eine Schreibvorgangfreigabe überschritten.

Run this command and look, which VSS Writer's aren't on a "stable" status (German Output):

> vssadmin list writers
vssadmin 1.1 - Verwaltungsbefehlszeilenprogramm des Volumeschattenkopie-Dienstes
(C) Copyright 2001-2013 Microsoft Corp.
Verfassername: "Task Scheduler Writer"
    Verfasserkennung: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
    Verfasserinstanzkennung: {1bddd48e-5052-49db-9b07-b96f96727e6b}
    Status: [1] Stabil
    Letzter Fehler: Kein Fehler
Verfassername: "System Writer"
    Verfasserkennung: {e8132975-6f93-4464-a53e-1050253ae220}
    Verfasserinstanzkennung: {0016eedb-5bc3-40e0-ad7f-c5b4ef639bb8}
    Status: [9] Fehler
    Letzter Fehler: Zeitüberschreitung

Here the second writer has a problem. Restart the corresponding service. ( net stop SERVICENAME && net start SERVICENAME)

VSS Writer Service Name Service Display Name
 ADAM $instanceName Writer  ADAM_$instanceName  $instanceName
 ASR Writer  VSS  Volume Shadow Copy
 BITS Writer  BITS  Background Intelligent Transfer Service
 Certificate Authority  CertSvc  Active Directory Certificate Services
 COM+ REGDB Writer  VSS  Volume Shadow Copy
 DFS Replication service writer  DFSR  DFS Replication
 DHCP Jet Writer  DHCPServer  DHCP Server
 FRS Writer  NtFrs  File Replication
 FSRM writer  srmsvc  File Server Resource Manager
 IIS Config Writer  AppHostSvc  Application Host Helper Service
 IIS Metabase Writer  IISADMIN  IIS Admin Service
 Microsoft Exchange Replica Writer  MSExchangeRepl  Microsoft Exchange Replication Service
 Microsoft Exchange Writer  MSExchangeIS  Microsoft Exchange Information Store
 Microsoft Hyper-V VSS Writer  vmms  Hyper-V Virtual Machine Management
 MSMQ Writer (MSMQ)  MSMQ  Message Queuing
 MSSearch Service Writer  WSearch  Windows Search
 NPS VSS Writer  EventSystem  COM+ Event System
 NTDS  NTDS  Active Directory Domain Services
 OSearch VSS Writer  OSearch  Office SharePoint Server Search
 OSearch14 VSS Writer  OSearch14  SharePoint Server Search 14
 OSearch15 VSS Writer  OSearch15  SharePoint Server Search 15
 Registry Writer  VSS  Volume Shadow Copy
 Shadow Copy Optimization Writer  VSS  Volume Shadow Copy
 SharePoint Services Writer  SPWriter  Windows SharePoint Services VSS Writer
 SMS Writer  SMS_SITE_VSS_WRITER  SMS_SITE_VSS_WRITER
 SPSearch VSS Writer  SPSearch  Windows SharePoint Services Search
 SPSearch4 VSS Writer  SPSearch4  SharePoint Foundation Search V4
 SqlServerWriter  SQLWriter  SQL Server VSS Writer
 System Writer  CryptSvc  Cryptographic Services
 TermServLicensing  TermServLicensing  Remote Desktop Licensing
 WDS VSS Writer  WDSServer  Windows Deployment Services Server
 WIDWriter  WIDWriter  Windows Internal Database VSS Writer
 WINS Jet Writer  WINS  Windows Internet Name Service (WINS)
 WMI Writer  Winmgmt  Windows Management Instrumentation