What does HRESULT 0x80042328 (VSS_E_TRANSACTION_FREEZE_TIMEOUT) mean?

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A timeout occurred while freezing a transaction manager.

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VSS_E_REBOOT_REQUIRED	VSS_E_TRANSACTION_THAW_TIMEOUT

VSS_E_TRANSACTION_FREEZE_TIMEOUT

VSS_E_TRANSACTION_FREEZE_TIMEOUT A transaction manager did not freeze in time for the shadow-copy operation. The VSS freeze window protects consistency while the snapshot is created.

What to check

Check which application, writer, or transaction manager was active during the freeze stage.
Reduce competing backup load and investigate application deadlocks or long-running transactions instead of only extending retry frequency.
Microsoft documents these transaction freeze/thaw errors as retryable; retry only after collecting the preceding VSS and application events.

vssadmin list writers

Microsoft: VSS file-system and security features

Microsoft: Shadow copy creation for providers

Microsoft: vssadmin list writers

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