Last week I migrated a HCL Domino V11 server to V14 and tried to run the compact task to upgrade the databases to ODS55 but received the following error:
HCL Notes: error 0x1F3
After some investigations and a very helpful hint of the HCL Support I could modify my existing script because due to the structural change in HCL Domino V14 the NOTES.INI now is located in the Domino\Data directory and so you have to run an offline compact this way:
– Stop the HCL Domino Server
– Change to the Domino\Data directory
– [dominoprogramdirectory]\ncompact.exe -ODS -# 4
With this way you also can run a Fixup, an UpdAll and other commands when your Domino Server is offline.
There also will be a knowledge entry but this one still has to be published: https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0110366
Tips and News for Collaboration solutions 
Thanks Rainer for this hint. This helped me to start the OTS for Domino V14, too.
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Another change is which user can run external commands. This is caused by the initiative to run Domino with the least amount of priviliges, which is a good thing.
See https://help.hcltechsw.com/domino/14.0.0/admin/enabling_domino_nonadmin_user.html and https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0090343 for more guidance and caveats.
Our company bypassed this hurdle because we already run the Domino service under a Windows user account, to be able to access file shares, which the SYSTEM account cannot do.
Because running offline commands is often needed to fix problems, a prepared admin would do well to test running commands in advance, having to figure these things out while under duress is not my idea of fun…
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