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DSI-X-80: Directory file SWITCH.UPG cannot be opened.

Source:  DSI.NLM

Possible Cause:  The eDirectory file SWITCH.UPG might be corrupted or unreadable.

Action:  See "Resolving File I/O Errors in the Traditional File Services Administration Guide.

  Previous Page: DSI-X-79: Bindery file SYS:SYSTEM\NET$OBJ.SYS cannot be opened.  Next Page: DSI-X-81: Some old ID's in SWITCH.UPG do not match the bindery. You have probably upgraded more than once. You must restore the original (first) SWITCH.UPG before you can downgrade a volume. Even then, some of your trustees, etc. may be irreversibly corrupted.