Symptoms
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Unable to create subdomain in Plesk:
A member could not be added to or removed from the local group because the member does not exist. (Error code 1387) at Unable to add the member (IWPD_1(johndoe)) to the group (IWPG_johndoe)
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Repairing domain via command line with
plesk repair webcommand fails with the same error message.
Cause
System user IWPD_1(johndoe) is missing on the server.
Resolution
Note: johndoe should be replace with the corresponding username from the error message.
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Connect to the server via RDP.
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Open "Local Users and Groups" utility using the following CMD command:
lusrmgr.msc
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Right-click on the Users folder and select "New User..." option to add new user.
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Add missing user with the following options:
- User name: IWPD_1(johndoe)
- Description: Plesk IIS Worker Process Identity Account
- Unselect: User must change password at next logon option
- Select: User cannot change password and Password never expires options
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Right-click on the added user and select "Properties" option.
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Navigate to "Member Of" tab and press "Add..." to add psacln and IWPG_johndoe groups:
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Regenerate website configuration:
plesk repair web example.com