Merci Omar pour l'intérêt que tu porte à ce sujet.
En effet je fais aussi un backup de l'état du système et la effectivement je n'ai pas de problème.
c'est juste le backup des DB exchange qui pose problème. A cet effet j'ai déja listé l'état des writers avec la commande VSSADMIN LIST WRITERS et le plus curieux aucun des writers n'a retourné une erreur, voir la liste:
C:\ vssadmin list writers
vssadmin 1.1 - Volume Shadow Copy Service administrative comma
(C) Copyright 2001-2005 Microsoft Corp.
Writer name: 'Task Scheduler Writer'
Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
State: [1] Stable
Last error: No error
Writer name: 'VSS Metadata Store Writer'
Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
State: [1] Stable
Last error: No error
Writer name: 'Performance Counters Writer'
Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
State: [1] Stable
Last error: No error
Writer name: 'System Writer'
Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
Writer Instance Id: {a8f68cfc-6ede-4593-996e-778d0e998e77}
State: [1] Stable
Last error: No error
Writer name: 'SqlServerWriter'
Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
Writer Instance Id: {80cc51fa-0e8c-4fcb-a92e-21d3be98b849}
State: [1] Stable
Last error: No error
Writer name: 'ASR Writer'
Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
Writer Instance Id: {baa39e37-2551-420f-9da6-68385356e95e}
State: [1] Stable
Last error: No error
Writer name: 'Shadow Copy Optimization Writer'
Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
Writer Instance Id: {f31374ec-7e1a-43b2-864c-6bf60fc1eceb}
State: [1] Stable
Last error: No error
Writer name: 'IIS Metabase Writer'
Writer Id: {59b1f0cf-90ef-465f-9609-6ca8b2938366}
Writer Instance Id: {a9cf88a0-b123-42dd-af49-4d98c5ae81ca}
State: [1] Stable
Last error: No error
Writer name: 'Registry Writer'
Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
Writer Instance Id: {c67296f9-0692-46b6-bacd-6bd82c6be1df}
State: [1] Stable
Last error: No error
Writer name: 'COM+ REGDB Writer'
Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
Writer Instance Id: {9c83961e-231f-4095-ae33-d0cb4bb8a7d8}
State: [1] Stable
Last error: No error
Writer name: 'IIS Config Writer'
Writer Id: {2a40fd15-dfca-4aa8-a654-1f8c654603f6}
Writer Instance Id: {2c7baf41-3ae7-480a-ba62-d11bbc58487b}
State: [1] Stable
Last error: No error
Writer name: 'WMI Writer'
Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
Writer Instance Id: {33979dc1-4b82-424f-a009-a076ac7e3871}
State: [1] Stable
Last error: No error
Parcontre sur un autre Forum on me dis que cela peut être causer par l'option Enable circular Loggin activer sur mes DB. Aurais tu plus info à ce sujet?
Merci d'avance.
