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Home windows occasions are logged by the system and can be utilized to troubleshoot issues throughout picture or file and folder backups. Microsoft Home windows Shadow Copy Service (VSS) logs warning and error occasions when a VSS error happens.



The monitoring system on considered one of my servers working Home windows Server 2016 began sending a number of Quantity Shadow Copy Service error messages with Occasion ID 8193 and VSS because the supply. The complete error description in Occasion Viewer (Software Log) seems like this:

 Quantity Shadow Copy Service error: Surprising error when calling routine RegOpenKeyExW (-2147483646, SYSTEM  CurrentControlSet  Providers  VSS  Diag, ...). Hr = 0x80070005, entry denied.Enterprise:Initialize writerContext:% MINIFYHTMLb5bdc426b817a5035bf92ebd42cdf8ae5% Author Class ID: {e8132975-6f93-4464-a53e-1050253ae220}Creator Title: System WriterWriter Occasion ID: {4f096fb4-2e00-4864-aa8f-885aa9186850} 

On the identical time, the server works flawlessly, and there have been no seen issues with providers or purposes.zheniyas. An error within the listing of VSS modules for the VSS author occasion ID.

vss listing editor

VSS EventID 8193 is a recognized error and is usually related to the set up of the DHCP position on a server working Home windows Server 2008 (or later), which causes the Community Service account to have permissions within the registry key. HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet loses Providers VSS Diag.

The issue is said to the set up of the VSS – DHCP Jet Author, which is answerable for the right creation of a shadow copy of the DHCP service. This VSS module adjustments the permissions for a registry key specified throughout set up.

To repair this error, you need to manually grant full entry to community providers for the desired key.

  1. Begin Registry Editor ( regedit.exe );
  2. Go to registry key HKLM SYSTEM CurrentControlSet providers VSS Diag and open its permissions (parameter “Permissions” within the context menu);
  3. Discover the community service within the listing and assign full management rights.

As a substitute of manually modifying the registry, it’s higher to revive the default permissions for the registry key utilizing a particular CLI command software – SubInACL. Obtain and set up it (if you have not already) and run the next instructions:

source vss event id 8193

cd "C: Program Recordsdata (x86) Home windows Useful resource Kits Instruments"
subinacl.exe / Subkeyreg-System CurrentControlSet Providers VSS Diag / sddl = D: PAI (A ;; KA ;;; BA) (A ;; KA ;;; SY) (A ;; CCDCLCSWRPSDRC ;;; BO ) (A ;; CCDCLCSWRPSDRC ;;; LS) (A ;; CCDCLCSWRPSDRC ;;; NS) (A; CIIO; RC ;;; OW) (A ;; KR ;;; BU) (A; CIIO; GR ;; ;; BU) (A; CIIO; GA ;;; BA) (A; CIIO; GA ;;; BO) (A; CIIO; GA ;;; LS) (A; CIIO; GA ;;; NS) (A ; CIIO; GA ;;; SY) (A; CI; CCDCLCSW ;;; S-1-5-80-3273805168-4048181553-3172130058-210131473-390205191) (A; ID; KR ;;; AC) (A; CIIOID; GR ;;; AC) S: ARAI

In Home windows Server 2008 R2, the command seems like this (in response to the Microsoft Information Base):

subinacl.exe/ Subkeyreg System CurrentControlSet Providers VSS Diag / sddl = O: SYG: SYD: PAI (A ;; KA ;;; BA) (A ;; KA ;;; SY) (A; SDGRGW; BO) (A ; SDGRGW; LS) (A; SDGRGW; NS) (A; CIIO; RC; S-1-3-4) (A ;; KR ;;; BU) (A; CIIO; GR ;;; BU) (A ; CIIO; GA ;;; BA) (A; CIIO; GA ;;; BO) (A; CIIO; GA ;;; LS) (A; CIIO; GA ;;; NS) (A; CIIO; GA ;; ; SY) (A; CI; CCDCLCSW ;;; S-1-5-80-3273805168-4048181553-3172130058-210131473-390205191)

Then change the permissions for the kid (nested) objects within the Registry Editor. To do that, open the properties of the Diag registry key and click on “Permissions” -> “Superior” -> “Exchange all permissions of subordinate objects”.

Then simply restart Home windows.

PS. Whereas writing this text, I seen that one other VSS error occurred with the identical (!!!) EventID 8193 and the next description:

 Quantity Shadow Copy Service error: An surprising error occurred when calling the ConvertStringSidToSid routine (S-1-5-21-2470146651-3958396388-212345117-21232.bak). hr = 0x80070539, SID construction isn't validIt's wonderful.Enterprise:OnIdentify eventCollecting knowledge from editorsContext:Runtime Context: Shadow Copy Optimization WriterWriter Class ID: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}Editor title: Shadow Copy Optimization EditorWriter Occasion ID: {5e5d68e6-9c97-4af6-a09f-bb2db4c65058}. 

To maintain the article full, I will even describe an answer to this downside.

On account of this error, you will be unable to again up system state or Hyper-V digital machines (utilizing Home windows Server backup). This leads to the next error: 0x80042308: The required object couldn't be discovered â.

This downside is resolved another way and is said to an incorrect entry within the HKLM Software program Microsoft Home windows NT CurrentVersion ProfileList profile registry key. The issue happens as a result of the Shadow Copy Optimization Author (VSS) can’t discover the consumer profile with a SID ending in .bak and returns an error. You will want to delete the registry key listed within the description of the ConvertStringSidToSid occasion (S-1-5-21-2470146651-3958396388-212345117-21232.bak).

  1. Open the regedit.exe file;
  2. Go to HKLM Software program Microsoft Home windows NT CurrentVersion ProfileList;
  3. Find and delete the .bak suffix registry key.
  4. Restart your laptop and take a look at the backup job once more.


If the DHCP server position is put in, the permissions for the next registry key (and all subkeys) can be overwritten when the DHCP service account is added:

HKLM CurrentControlSet Providers VSS Diag

On this case, the community service account can be deleted.

Every time the Cryptographic Providers service is began, System Author is initialized beneath the Community Service account and browse / write permissions are checked for the next registry key:

HKLM CurrentControlSet Providers VSS Diag

Because the account is used to entry this keynetwork service, there is no such thing as a authority over the community service. Due to this fact, VSS logs an Entry Denied occasion.


The shopper has contacted Microsoft Assist for an agent suggestion in KB article 940184:

http://assist.microsoft.com/kb/940184 And repair:


Applies to

Home windows Server 2003 R2 Enterprise Version
NetBackup Enterprise Server 6.5



How do you repair VSS?

Home windows 10 VSS error: listed below are 5 methods to repair it
  1. Ensure that the Quantity Shadow Copy Service is working.
  2. Delete pointless information from all partitions of the disk.
  3. Disable Home windows Firewall.
  4. Disable your antivirus software program.
  5. Add disk house for the quantity shadow copy.
  6. Take away orphan shadows.
  7. Uninstall third occasion backup software program.