Event 40966 - Exchange Provisioning Task - Unable to re-initialize COM runtime - 0x80010106

Problem

.NET 3.0 is installed on the Enterprise Vault server.

Error Message

Event Type:           Error
Event Category:    Exchange Provisioning Task 
Event ID:                40966
Description: A program fault has raised an exception.
Exception: Unable to re-initialize COM runtime: HRESULT = [0x80010106]
Diagnostic: Type: System.ApplicationException
Reference: Command Line: "C:\Program Files\Enterprise Vault\EvExchangePolicySyncTask.exe" -URL:tcp://172.29.22.33:17003/70aa9932_5318_488d_875a_6889ebc284d8/KVS.EnterpriseVault.ProcessManager7408374 -CUSTOM:1C7AC9D8813781B409870AC906A6664AD1012u00VaultSite.Domain.com|True||
Application Domain: EvExchangePolicySyncTask.exe
Process Id: 14320 / Thread Id: 7560
Stack Trace:    at EVManagedLibrary.COMHelperWrapper.CoReinitializeMTA()
at KVS.EnterpriseVault.ExchangePolicySync.ExchangePolicySyncTaskProcessor.TaskMain(String[] args)
at KVS.EnterpriseVault.Management.ManagedTask.MainThread() 
V-437-40966

To validate if this is the issue a DTRACE is needed, please perform the following steps on the EV server that has generated Event ID 3375 while re-creating the issue.

• DTRACE the process EvExchangePolicySyncTask for no less than 5 minutes while re-creating the issue.
• Open the log file created and search for either of the following the strings: 

[9472] (EvExchangePolicySyncTask) <6588> EV-H {EXCHANGEPOLICYSYNCTASKPROCESSOR.EN_US} Entering...
[9472] (EvExchangePolicySyncTask) <6588> EV-H {EXCHANGEPOLICYSYNCTASKPROCESSOR.EN_US} leaving...
[9472] (EvExchangePolicySyncTask) <6588> EV-H {MANAGEDTASK.EN_US} Exception: Unable to re-initialize COM runtime: HRESULT = [0x80010106] Info: Diag: Type:System.ApplicationException ST: at EVManagedLibrary.COMHelperWrapper.CoReinitializeMTA()|at KVS.EnterpriseVault.ExchangePolicySync.ExchangePolicySyncTaskProcessor.TaskMain(String[] args)| at KVS.EnterpriseVault.Management.ManagedTask.MainThread(

Cause

Incorrect version of .NET installed on the Enterprise Vault Server.

Solution

Enterprise Vault does not support .NET 3.0 on the server.  

1. Remove all unsupported versions of .NET.
2. Install supported version of .NET 
3. Re-Install current version binaries for Enterprise Vault.