Custom Paper Size Disappeared After a Printer Driver Update
A custom paper or roll size that worked before a driver update is no longer selectable. Start by identifying exactly where the problem first appears, then test the most likely causes one at a time. This avoids changing a correct drawing to compensate for a PDF, driver or printer problem.
Symptoms — confirm exactly what is wrong
- A custom paper or roll size that worked before a driver update is no longer selectable.
- First determine whether Windows itself can see and use the device.
- If Windows works but AutoCAD does not, focus on PC3 files, Printer Configuration Search Path, driver and network queue.
Beginner rule: Change one setting at a time. After each change, repeat the same test so you know what actually fixed the problem.
30-second triage: Print a Windows test page or confirm the queue is online before changing AutoCAD. Then reopen AutoCAD and compare the system printer with the PC3/device shown in Page Setup.
Likely causes — check these in order
| Likely cause | Why it creates this symptom | Quick check |
|---|---|---|
| Printer driver changed | Driver updates can change media names, printable areas and device capabilities. | Compare driver version, media list and a known-good Page Setup. |
| PC3 points to a missing or invalid device | The PC3 stores a printer/plotter driver/device that no longer exists. | Open PLOT/PAGESETUP and look for the Update PC3 File With New Printer prompt. |
| PC3 or support path differs | The required PC3 may exist on one workstation but not in the active Printer Configuration Search Path on another. | Open PLOTTERMANAGER and compare the PC3 files and support path. |
| Wrong paper source or roll | The driver/PC3 can select a media source different from the one loaded. | Open device Custom Properties and compare roll/tray/media source. |
For the underlying setup behind these checks, use Custom Paper Sizes: Complete Guide and Add a Custom Paper Size to an PC3 while you diagnose the symptom.
Diagnostic path — isolate the responsible setting
Work through the checks in order. Do not apply a fix until its diagnostic check differs from the known-good project standard.
Diagnostic 1 — Printer driver changed
Where: Windows printer properties/driver information, then the AutoCAD PC3/Page Setup.
Do this: Compare driver version, media list and a known-good Page Setup.
Check: If this differs from the known-good project standard, correct it and retest before continuing.
Diagnostic 2 — PC3 points to a missing or invalid device
Where: PAGESETUP/PLOT when AutoCAD reports the missing device, then PLOTTERMANAGER.
Do this: Open PLOT/PAGESETUP and look for the Update PC3 File With New Printer prompt.
Check: If this differs from the known-good project standard, correct it and retest before continuing.
Diagnostic 3 — PC3 or support path differs
Where: OPTIONS > Files > Printer Support File Path > Printer Configuration Search Path, plus PLOTTERMANAGER.
Do this: Open PLOTTERMANAGER and compare the PC3 files and support path.
Check: If this differs from the known-good project standard, correct it and retest before continuing.
Diagnostic 4 — Wrong paper source or roll
Where: PAGESETUP > Printer/Plotter > Properties/Custom Properties > media or roll settings.
Do this: Open device Custom Properties and compare roll/tray/media source.
Check: If this also matches the known-good setup, use the isolation test below instead of changing unrelated settings.
Fixes — use only the fix that matches your diagnosis
Fix 1 — Revalidate plotting after the driver update
Use this fix when: your diagnosis confirmed that Printer driver changed.
Do this: Recheck PC3, paper names, printable area, custom media and a border calibration plot. Update the controlled setup only after testing.
Check: Reopen the device list or send one simple test output before changing another AutoCAD setting.
Fix 2 — Update or replace the PC3 device
Use this fix when: your diagnosis confirmed that PC3 points to a missing or invalid device.
Do this: Use AutoCAD’s Update PC3 File With New Printer dialog to point the PC3 to the valid device, preferably saving a controlled copy when driver settings differ.
Check: Reopen the device list or send one simple test output before changing another AutoCAD setting.
Fix 3 — Deploy the same PC3/support path
Use this fix when: your diagnosis confirmed that PC3 or support path differs.
Do this: Use PLOTTERMANAGER/Options to place the approved PC3 in the active Printer Configuration Search Path on each workstation.
Check: Reopen the device list or send one simple test output before changing another AutoCAD setting.
Fix 4 — Choose the correct roll/tray
Use this fix when: your diagnosis confirmed that Wrong paper source or roll.
Do this: Open the printer/plotter Custom Properties and select the intended roll, tray or media source, then save it in the controlled PC3/Page Setup if appropriate.
Check: Reopen the device list or send one simple test output before changing another AutoCAD setting.
Verification — prove the fix before full production
- Confirm the device is visible and usable in Windows.
- Reopen AutoCAD and confirm it appears in Printer/Plotter or the intended PC3 resolves correctly.
- Send a simple one-page test before a project sheet.
- Then run one representative production Layout and verify paper source, margins and scale.
Still not fixed? Use an isolation test
Test the device from Windows, then test AutoCAD with a local PDF PC3. These two checks separate OS/device availability from drawing-specific plotting settings.
Prevention — reduce the chance of recurrence
- Manage printer drivers, Windows queues and PC3 files as shared workstation standards.
- Keep the Printer Configuration Search Path consistent across CAD workstations.
- After driver changes, revalidate media names, printable area and custom paper definitions.
- Maintain a known-good local PDF PC3 for isolating device versus drawing problems.
Official Autodesk references
Use these references when the interface, driver or plot-style behavior on your workstation differs from the checks above.
Frequently asked questions
What should I check first?
Start with Printer driver changed. Use the quick check in the diagnostic section before changing anything else.
What if that check is correct?
Move to PC3 points to a missing or invalid device. The goal is to eliminate causes one at a time, not to change several settings together.
Should I recreate the PC3 immediately?
Only after checking that Windows sees the correct device and that the existing PC3/search path is actually the problem.
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