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WU_E_SIH_SLS_PARSE
WU_E_SIH_SLS_PARSE means the SIH client received a service-environment response that it could not parse. The response may be malformed, incomplete, stale, or incompatible with the client.
What to check
- Review the first network, proxy, or content-processing error before the parse failure.
- For a managed update environment, check whether the configured service or any intermediary is modifying or truncating responses.
- Compare a failing client with a working device that uses the same source and policy.
Microsoft: SIH client diagnostic event fields
Microsoft: manage additional Windows Update settings
Microsoft: Windows Update error reference
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