Quick Answer
The answer is that the 'guest ok = yes' directive is missing from the smb.conf configuration. This is the most likely cause of the Samba print server Windows driver upload issue because Windows 10 clients, when attempting to upload printer drivers to a Samba share, often do so under the guest account or without supplying explicit credentials. Without 'guest ok = yes', Samba enforces authentication by default for printer shares, denying the upload. On the LPIC-2 exam, this scenario tests your understanding of Samba share security and the interaction between 'printable = yes' and guest access; a common trap is to blame the 'browseable = no' setting or the spool path, but neither prevents direct driver uploads. Remember the memory tip: "Printers need guests to print drivers"—if guest access is not explicitly allowed, driver uploads will be silently rejected.
This LPIC-2 practice question tests your understanding of file sharing and samba. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A Samba server is configured as a print server. Clients running Windows 10 report that printer drivers cannot be uploaded. The relevant smb.conf section is:
[printers]
comment = All Printers path = /var/spool/samba browseable = no printable = yes
What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
The 'printable = yes' directive is missing
Why wrong: It is present
The 'path' is incorrectly set to /var/spool/samba
Why wrong: Path is correct
The 'guest ok = yes' directive is missing
Needed for driver upload
The 'browseable = no' directive prevents driver discovery
Why wrong: Does not affect upload
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The 'guest ok = yes' directive is missing
The 'printable = yes' directive is present, so option A is not the issue. The 'path' /var/spool/samba is the standard spool directory for Samba print jobs, so option B is incorrect. The 'browseable = no' only hides the share from browsing, but does not prevent driver uploads; Windows clients can still connect directly. The most likely cause is that 'guest ok = yes' is missing, because by default Samba requires authentication for printer shares, and Windows 10 clients attempting to upload drivers often do so under the guest account (or without valid credentials) unless the share explicitly allows guest access. Without 'guest ok = yes', the upload is denied.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The 'printable = yes' directive is missing
Why it's wrong here
It is present
The 'path' is incorrectly set to /var/spool/samba
Why it's wrong here
Path is correct
The 'guest ok = yes' directive is missing
Why this is correct
Needed for driver upload
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
The 'browseable = no' directive prevents driver discovery
Why it's wrong here
Does not affect upload
Common exam traps
The trap here is that candidates mistakenly think 'browseable = no' prevents driver discovery, when in fact Windows driver uploads rely on direct UNC connections (e.g., \\server\printername) and are independent of browseability.
Detailed technical explanation
When Windows clients upload printer drivers to a Samba print server, they typically connect as the guest user (or a user with write access to the printer's driver store). The 'guest ok = yes' directive allows unauthenticated access to the share, which is often required because Windows driver uploads may not pass valid credentials by default. Under the hood, Samba uses the 'printer admin' and 'write list' settings to control who can upload drivers, but without 'guest ok = yes', the server rejects the guest connection, causing the upload to fail with an access denied error. In real-world scenarios, administrators often forget this directive when setting up a pure print server for Windows clients.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
File Sharing and Samba — This question tests File Sharing and Samba — Read the scenario before looking for a memorised answer..
The correct answer is: The 'guest ok = yes' directive is missing — The 'printable = yes' directive is present, so option A is not the issue. The 'path' /var/spool/samba is the standard spool directory for Samba print jobs, so option B is incorrect. The 'browseable = no' only hides the share from browsing, but does not prevent driver uploads; Windows clients can still connect directly. The most likely cause is that 'guest ok = yes' is missing, because by default Samba requires authentication for printer shares, and Windows 10 clients attempting to upload drivers often do so under the guest account (or without valid credentials) unless the share explicitly allows guest access. Without 'guest ok = yes', the upload is denied.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This LPIC-2 practice question is part of Courseiva's free LPI certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the LPIC-2 exam.
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