| Event Id | 11506 |
| Source | MSExchange NNTP Interface |
| Description | Accept clients on NNTP interface failed in function HrRegisterProtocol with error 0x2740. |
| Event Information | This issue can occur if another program is using the Transmission Control Protocol (TCP) port that the information store uses for the corresponding protocol. To resolve this issue, quit the program or service that is using the ports that the information store uses, or configure the program to use different ports. |
| Reference Links | XADM: Event ID 11506 or 11508 Messages with Error 0x2740 Are Logged When You Start the Information Store |
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