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Notes client error: Invalid NSF version
IBM (NSF) Thursday, 03 December 2015 by paul

When opening database the Notes client displays the error message "Invalid NSF version".

Client cannot understand the ODS (file format). Upgrade client to latest release.

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Saturday, 05 December 2015 by Chris Hudson
Sorry, I take that back. ODS52 is 9.0.1. You are correct, the 9.0 client would not have been able to read ODS 52.
Saturday, 05 December 2015 by Chris Hudson
Just a clarification. ODS 51 is the R8.5 ondisk structure. ODS 52 is the R9 ondisk structure. The 9.0 and 9.0.1 clients should both have been able to read the ODS 52 databases.
Friday, 04 December 2015 by Paul
Hi Jay, Thanks. But the issue was caused by accessing the 9.0.1 client (ODS 52) NSF files from a 9.0 client (ODS 51). I do not think it will be able to downgrade the ODS file format from a newer version which it cannot read. Upgrading the client is the best option I think.
Thursday, 03 December 2015 by Jay Marme
To have the ODS of databases such as log.nsf, names.nsf, bookmark.nsf, etc., upgraded to 52, add CREATE_R9_DATABASES=1 and CREATE_R9_LOG=1 to the user's Notes.INI, and then run ncompact -i -C from the command line with the Notes client shut down.