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HTTP 500 Error in OWA and ECP Something Went wrong

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something went wrong
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X-ClientId: MOAG – DKFF – BDUB – 333

X-OWA-Error: Microsoft.Exchange.Data.Storage.MailboxOfflineException
X-OWA-Version: 15.0.1076.9
X-FEServer: EXCH01
X-BEServer: EXCH02
Date: 14/12/2016 05:57:00

Events Generated –

Log Name:      Application
Source:        MSExchange Control Panel
Date:          12/14/2016 12:02:46 PM
Event ID:      4
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      EXCH02.careexchange.in
Description:
Current user: ‘careexchange.in/Microsoft Exchange System Objects/Monitoring Mailboxes /HealthMailbox0eba0829c21c4694b00335082686d519′
Request for URL

'https://exch.azure365pro.com:444/ecp/default.aspx(https://exch/ecp/)' 

failed with the following error:
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.Exchange.Clients.Common.Canary15.Init(Byte[] userContextIdBinary, Byte[] timeStampBinary, String logonUniqueKey, Byte[] hashBinary, String logData)
at Microsoft.Exchange.Clients.Common.Canary15..ctor(String logonUniqueKey)
at Microsoft.Exchange.Clients.Common.Canary15Cookie. TryCreateFromHttpCookie(HttpCookie cookie, String logonUniqueKey, Canary15Profile profile)
at Microsoft.Exchange.Clients.Common.Canary15Cookie. TryCreateFromHttpContext(HttpContext httpContext, String logOnUniqueKey, Canary15Profile profile)
at Microsoft.Exchange.Management.ControlPanel. CanaryExtensions. CheckCanary15(HttpContext context, Boolean shouldRenew, String canaryName)
at Microsoft.Exchange.Management.ControlPanel. CanaryExtensions. CheckCanary(HttpContext context)
at Microsoft.Exchange.Management.ControlPanel. RbacModule.Application _PostAuthenticateRequest(Object sender, EventArgs e)
at System.Web.HttpApplication.SyncEventExecutionStep.System. Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
at Microsoft.Exchange.Clients.Common.Canary15.Init(Byte[] userContextIdBinary, Byte[] timeStampBinary, String logonUniqueKey, Byte[] hashBinary, String logData)
at Microsoft.Exchange.Clients.Common.Canary15..ctor(String logonUniqueKey)
at Microsoft.Exchange.Clients.Common.Canary15Cookie. TryCreateFromHttpCookie(HttpCookie cookie, String logonUniqueKey, Canary15Profile profile)
at Microsoft.Exchange.Clients.Common.Canary15Cookie. TryCreateFromHttpContext(HttpContext httpContext, String logOnUniqueKey, Canary15Profile profile)
at Microsoft.Exchange.Management.ControlPanel. CanaryExtensions.CheckCanary15(HttpContext context, Boolean shouldRenew, String canaryName)
at Microsoft.Exchange.Management.ControlPanel. CanaryExtensions.CheckCanary(HttpContext context)
at Microsoft.Exchange.Management.ControlPanel. RbacModule.Application_PostAuthenticateRequest(Object sender, EventArgs e)
at System.Web.HttpApplication.SyncEventExecutionStep. System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) Boolean& completedSynchronously)

Flight info: Features:[[Global.DistributedKeyManagement, False],[Global.GlobalCriminalCompliance, False],[Global.MultiTenancy, False],[Global.WindowsLiveID, False],[Eac.AllowMailboxArchiveOnlyMigration, True],[Eac.AllowRemoteOnboardingMovesOnly, False],[Eac.BulkPermissionAddRemove, True],[Eac.CmdletLogging, True],[Eac.CrossPremiseMigration, False],[Eac.DevicePolicyMgmtUI, False],[Eac.DiscoveryDocIdHint, False],[Eac.DiscoveryPFSearch, False],[Eac.DiscoverySearchStats, False],[Eac.DlpFingerprint, False],[Eac.EACClientAccessRulesEnabled, False],[Eac.GeminiShell, False],[Eac.ManageMailboxAuditing, False],[Eac.ModernGroups, False],[Eac.Office365DIcon, False],[Eac.OrgIdADSeverSettings, False],[Eac.RemoteDomain, False],[Eac.UCCAuditReports, False],[Eac.UCCPermissions, False],[Eac.UnifiedAuditPolicy, False],[Eac.UnifiedComplianceCenter, False],[Eac.UnifiedPolicy, False],[Eac.UnlistedServices, False],],  Flights:[],  Constraints:[[LOC, EN-US],[MACHINE, EXCH02],[MODE, ENTERPRISE],[PROCESS, W3WP],[USER, HEALTHMAILBOX0EBA0829C21C4694B001F5082686D519@],[USERTYPE, BUSINESS],], IsGlobalSnapshot: False

Log Name:      Application
Source:        Windows Error Reporting
Date:          12/14/2016 12:09:15 PM
Event ID:      1001
Task Category: None
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      EXCH01.careexchange.in
Description:
Fault bucket , type 0
Event Name: E12IIS
Response: Not available
Cab Id: 0

Problem signature:
P1: c-RTL-AMD64
P2: 15.00.1076.009
P3: w3wp#MSExchangeOWAAppPool
P4: M.E.Clients.Common
P5: M.E.C.C.Canary15.Init
P6: System.NullReferenceException
P7: 4058
P8: 15.00.1076.000
P9:
P10:

Attached files:
C:\Windows\Temp\981892be-0fdc-445f-9fc5-43a087f8408a\report.txt
C:\Windows\Temp\981892be-0fdc-445f-9fc5-43a087f8408a\report.xml

These files may be available here:
Analysis symbol:
Rechecking for solution: 0
Report Id: 98c251d8-c1d4-11e6-80e6-005056a13698
Report Status: 262144
Hashed bucket:

Log Name:      Application
Source:        MSExchange Common
Date:          12/14/2016 12:09:13 PM
Event ID:      4999
Task Category: General
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      EXCH01.careexchange.in
Description:
Watson report about to be sent for process id: 3436, with parameters: E12IIS, c-RTL-AMD64, 15.00.1076.009, w3wp#MSExchangeOWAAppPool, M.E.Clients.Common, M.E.C.C.Canary15.Init, System.NullReferenceException, 4058, 15.00.1076.000.
ErrorReportingEnabled: True

Solution –

Start – Run – Adsiedit.msc clear these values

CN=Client Access,CN=“Organization name”,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=“domain”

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Took backup of those values.

Cleared below Attributes from Active Directory .

msExchCanaryData0

msExchCanaryData1

msExchCanaryData2

Recycled – OWA and ECP pool

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It logged in Successfully.

Satheshwaran Manoharan
Satheshwaran Manoharanhttps://www.azure365pro.com
Specialized in Microsoft Azure - Office 365 / Microsoft Exchange; conducted numerous projects worldwide in designing, supporting, and implementing messaging and virtualization infrastructure for medium-sized and large enterprises. Further, I am a Cloud Architect and Technical Advisor for various start-ups.

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