| Event Id | 1033 |
| Source | Active Directory |
| Description | Internal error: Unable to cache class schema. This Windows Domain Controller may have a memory allocation problem. Stop and restart this Windows Domain Controller and try again. |
| Event Information | Internal error: Active Directory could not store schema class information to the cache. This local domain controller might have a memory allocation problem. Increase physical memory or virtual memory. If this error continues to occur, restart this local domain controller. |
| Reference Links | Monitoring AD Changes: Article |
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