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Error code 121

Error code
121
Type
Description
The semaphore timeout period has expired. ERROR_SEM_TIMEOUT

Comments

Tad Uhl
According to M325487 this is a message that typically is recorded when there are network connectivity problems. Network connectivity problems have various causes, but they typically occur because of incorrect network adapters, incorrect switch settings, faulty hardware, or driver issues. Some connectivity symptoms are intermittent and do not clearly point to any one of these causes. See the article for more details.

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