| Event Id | 1019 |
| Source | MSExchangeCluster |
| Description | Exchange Information Store Instance: The RPC call to the service to take the resource offline failed. |
| Event Information | According to Microsoft: CAUSE: This problem occurs if the RootVer registry value is invalid. RESOLUTION: If the computer is running the Microsoft .NET Framework 1.1, set the RootVer registry value to 1.1.4322.0. To do this, follow these steps: 1. Click Start, click Run, type regedit, and then click OK. 2. Locate and then click the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ASP.NET 3. Double-click the RootVer value, type 1.1.4322.0 in the Value data box, and then click OK. 4. Quit Registry Editor. |
| Reference Links | The Microsoft Exchange System Attendant service may not come online if the RootVer registry value is invalid on a server that is running Exchange Server 2003 |
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