1. Delete subscription key and restart eventsystem and COM+ app services

2. Run “vssadmin list writers”

3. re-register all VSS binaries, then “vssadmin list writer” works.

a. Backup and remove register key

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79

216}\Subscriptions

b. net stop “COM+ Event System”; confirm Y.

c. net stop “COM+ System Application “

d. net stop vss ;

e. net stop swprv

f. re-register all dlls.

regsvr32 vss_ddu.dll

regsvr32 ole32.dll

regsvr32 oleaut32.dll

regsvr32 vss_ps.dll

Vssvc.exe /Register

regsvr32 /I swprv.DLL

regsvr32 /I EVENTCLS.DLL

regsvr32 ES.DLL

regsvr32 stdprov.dll

regsvr32 vssui.dll

regsvr32 msxml3.dll

g. net start “COM+ Event System”;

h. net start “COM+ System Application“

i. net stop vss ;

j. net stop swprv

k. after these steps, the registry will be re-created.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79

216}\Subscriptions