Mac Sidecar Not Working - How to Fix
Can't use your iPad as a second display? Here's how to fix Sidecar connection issues, blank screens, and lag.
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Tools and accessories matched to this guide.
64 bits, pro-grade — for serious DIY repair only
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64 bits, pro-grade — for serious DIY repair only
Required for safe electronics cleaning
📋 First: Check Compatibility
Sidecar requires specific hardware:
Compatible Macs (2016 or later):
- MacBook Pro 2016+
- MacBook Air 2018+
- MacBook 2016+
- iMac 2017+ or iMac Pro
- Mac mini 2018+
- Mac Pro 2019+
- Mac Studio (all models)
Compatible iPads:
- iPad Pro (all models)
- iPad Air 3rd gen+
- iPad 6th gen+
- iPad mini 5th gen+
Software required: macOS Catalina (10.15) or later + iPadOS 13 or later
🔑 Fix #1: Same Apple ID Required
Both devices must use the same Apple ID:
- Mac: System Settings → Apple ID → Check signed-in account
- iPad: Settings → [Your Name] → Check Apple ID
- Sign out and back in on both if different
- Two-factor authentication must be enabled on your Apple ID
📡 Fix #2: Enable Required Settings
These must be ON for Sidecar to work:
On Mac:
- Wi-Fi: Must be turned on (even for wired connection)
- Bluetooth: Must be enabled
- Handoff: System Settings → General → AirDrop & Handoff → Enable Handoff
On iPad:
- Bluetooth: Settings → Bluetooth → ON
- Wi-Fi: Settings → Wi-Fi → ON
- Handoff: Settings → General → AirPlay & Handoff → Handoff ON
🔌 Fix #3: Try Wired Connection
If wireless Sidecar fails, use a cable:
- Connect iPad to Mac with USB or USB-C cable
- If prompted, tap Trust on iPad
- Go to System Settings → Displays
- Click the + button and select your iPad
- Wired connection is more stable and has less lag
🔄 Fix #4: Restart Both Devices
A simple restart often fixes connectivity:
Restart Mac:
- Apple menu → Restart
Restart iPad:
- Hold Power + Volume (Face ID) or just Power (Home button)
- Slide to power off, wait 30 seconds, power on
For wireless Sidecar, devices must be close:
- Keep iPad within 30 feet of Mac
- Both should be on same Wi-Fi network
- Disable VPN on both devices temporarily
- Turn off Personal Hotspot on iPad
- Avoid using internet sharing on Mac
Ensure both devices have latest updates:
- Mac: System Settings → General → Software Update
- iPad: Settings → General → Software Update
- Older software versions have known Sidecar bugs
If nothing else works, reset network on iPad:
- Settings → General → Transfer or Reset iPad → Reset → Reset Network Settings
- This clears saved Wi-Fi and Bluetooth connections
- Reconnect to Wi-Fi and try Sidecar again
iPad might be connected but not visible:
- System Settings → Displays → Arrange
- Look for your iPad in the display arrangement
- Drag it to match your physical setup
- Check if it's set to "Mirror" instead of "Extend"
- USB-C to USB-C Cable — For reliable wired Sidecar ($15)
- iPad Stand — Perfect angle for second display ($25)
Persistent Sidecar problems can indicate hardware issues with Bluetooth, Wi-Fi, or display output. We can diagnose and repair connectivity problems on your Mac or iPad.
📞 Call PC Medics: 856-914-1074
We service all Mac and iPad models.
📦 Mail-In Repair Service
Not comfortable doing this yourself? Send your device to a professional repair shop.
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