Backup Exec 2012 backing up Exchange DAG. Error querying writer status error

have you check Vss writers status on the server?

to check vss writer status run following command on command prompt

vssadmin list writers

Also check it out below link

http://www.symantec.com/business/support/index?page=content&id=TECH27875

Thank you for your response.

Odd... I ran the command all entries said "stable... No error"

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32> VSSADMIN LIST WRITERS
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(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: {9ea36756-b049-40f4-b446-8091962b50a9}
   State: [1] Stable
   Last error: No error

Writer name: 'Microsoft Exchange Replica Writer'
   Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
   Writer Instance Id: {ad077ab4-5b79-4276-9192-ebe08c2a161d}
   State: [1] Stable
   Last error: No error

Writer name: 'ASR Writer'
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {b670ac8f-b9ec-4481-8efe-4f0343338827}
   State: [1] Stable
   Last error: No error

Writer name: 'IIS Metabase Writer'
   Writer Id: {59b1f0cf-90ef-465f-9609-6ca8b2938366}
   Writer Instance Id: {7efb278d-f1e6-42a1-8d05-6e6a048c409f}
   State: [1] Stable
   Last error: No error

Writer name: 'Microsoft Exchange Writer'
   Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
   Writer Instance Id: {6b2d6004-ef64-4505-94ac-bd5c0a7d524e}
   State: [1] Stable
   Last error: No error

Writer name: 'IIS Config Writer'
   Writer Id: {2a40fd15-dfca-4aa8-a654-1f8c654603f6}
   Writer Instance Id: {711dd748-19c7-4859-a107-c47ef38f8230}
   State: [1] Stable
   Last error: No error

Writer name: 'SqlServerWriter'
   Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
   Writer Instance Id: {b9874ad8-048d-49ea-bbe8-b86084610557}
   State: [1] Stable
   Last error: No error

Writer name: 'WMI Writer'
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {815af8a7-325f-47f3-ae94-19660b4df73e}
   State: [1] Stable
   Last error: No error

Writer name: 'Registry Writer'
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {a154763d-9690-4ead-b24a-3f21928a7f85}
   State: [1] Stable
   Last error: No error

Writer name: 'Shadow Copy Optimization Writer'
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {4e7171a4-9f98-420a-8697-f1071e7297a7}
   State: [1] Stable
   Last error: No error

Writer name: 'COM+ REGDB Writer'
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {5cf5bee5-eeca-4610-8ac3-e8aafd3b78ca}
   State: [1] Stable
   Last error: No error

Writer name: 'Cluster Database'
   Writer Id: {41e12264-35d8-479b-8e5c-9b23d1dad37e}
   Writer Instance Id: {b523f5f1-ca4a-4145-879f-b6f419a0fce9}
   State: [1] Stable
   Last error: No error

Any additional feedback will be appreciated.

Here is a copy of the BE log for that job...

If this is the full output of the command "vssadmin list writers" then it looks like hyper-V writer is missing.

check below link
http://www.symantec.com/connect/forums/backup-exec-2012-v-79-57344-65233-snapshot-technology-initialization-failure

issue still isn't resolved but at least the backups are working