Update to the latest version the following: driver, firmware and other possible software. If possible, try different setups with other PC, cable, host slot or separate host controller instead of an integrated one. Check driver by disabling and enabling it. Verify that host. Works with devices running Android®,Motorola OS, or Windows Mobile® operating systems Mac OS X® Mac OS® 10.5.8 Leopard Mac OS® 10.6 Snow Leopard Mac OS® 10.7 Lion Mac OS® 10.8 Mountain Lion Mac OS® 10.10 Yosemite Works with devices running Android®. Select the questions to view the answers. How do I enable automatic double-sided printing for my product in Windows or on my Mac? 2-Sided Printing (Windows) or Two-Sided Printing Settings (Mac) is gray or not available for selection.
Starting with iOS 11.4.1, if you use USB accessories with your iPhone, iPad, or iPod touch, or if you connect your device to a Mac or PC, you might need to unlock your device for it to recognize and use the accessory. Your accessory then remains connected, even if your device is subsequently locked.
If you don’t first unlock your password-protected iOS device—or you haven’t unlocked and connected it to a USB accessory within the past hour—your iOS device won’t communicate with the accessory or computer, and in some cases, it might not charge. You might also see an alert asking you to unlock your device to use accessories.
If the USB accessory is still not recognized after you unlock your device, disconnect your device from the accessory, unlock your device, and then reconnect the accessory.
Your iPhone, iPad, or iPod touch charges as usual when it’s connected to a USB power adapter.
Allow access to USB accessories
You can allow your iOS device to always access USB accessories, for example, if you use a USB assistive device to enter your passcode on your locked iPhone. Many assistive devices will automatically turn on the setting to allow USB devices the first time they’re connected.
If you don’t connect to USB accessories regularly, you might need to turn on this setting manually.
In Settings, go to Face ID & Passcode or Touch ID & Passcode, and turn on USB Accessories under Allow Access When Locked.
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When the USB Accessories setting is off, as in the image above, you might need to unlock your iOS device to connect USB accessories.
Administrators can control the USB Accessories setting on supervised iOS devices using Apple Configurator or mobile device management.
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Starting with Windows 10, version 1607, Windows will not load any new kernel-mode drivers which are not signed by the Dev Portal. To get your driver signed, first Register for the Windows Hardware Dev Center program. Note that an EV code signing certificate is required to establish a dashboard account.
There are many different ways to submit drivers to the portal. For production drivers, you should submit HLK/HCK test logs, as described below. For testing on Windows 10 client only systems, you can submit your drivers for attestation signing, which does not require HLK testing. Or, you can submit your driver for Test signing as described on the Create a new hardware submission page.
Exceptions
Cross-signed drivers are still permitted if any of the following are true:
- The PC was upgraded from an earlier release of Windows to Windows 10, version 1607.
- Secure Boot is off in the BIOS.
- Drivers was signed with an end-entity certificate issued prior to July 29th 2015 that chains to a supported cross-signed CA.
To prevent systems from failing to boot properly, boot drivers will not be blocked, but they will be removed by the Program Compatibility Assistant.
Signing a driver for client versions of Windows
To sign a driver for Windows 10, follow these steps:
- For each version of Windows 10 that you want to certify on, download the Windows HLK (Hardware Lab Kit) for that version and run a full cert pass against the client for that version. You'll get one log per version.
- If you have multiple logs, merge them into a single log using the most recent HLK.
- Submit your driver and the merged HLK test results to the Windows Hardware Developer Center Dashboard portal.
For version-specific details, please review the WHCP (Windows Hardware Compatibility Program) policy for the Windows versions you want to target.
To sign a driver for Windows 7, Windows 8, or Windows 8.1, use the appropriate HCK (Hardware Certification Kit). For more information, see the Windows Hardware Certification Kit User's Guide.
Signing a driver for earlier versions of Windows
Before Windows 10, version 1607, the following types of drivers require an Authenticode certificate used together with Microsoft's cross-certificate for cross-signing:
- Kernel-mode device drivers
- User-mode device drivers
- Drivers that stream protected content. This includes audio drivers that use Protected User Mode Audio (PUMA) and Protected Audio Path (PAP), and video device drivers that handle protected video path-output protection management (PVP-OPM) commands. For more information, see Code-signing for Protected Media Components.
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Signing requirements by version
The following table shows signing policies for client operating system versions.
Note that Secure Boot does not apply to Windows Vista and Windows 7.
| Applies to: | Windows Vista, Windows 7; Windows 8+ with Secure Boot off | Windows 8, Windows 8.1, Windows 10, versions 1507, 1511 with Secure Boot on | Windows 10, versions 1607, 1703, 1709 with Secure Boot on | Windows 10, version 1803+ with Secure Boot on |
|---|---|---|---|---|
| Architectures: | 64-bit only, no signature required for 32-bit | 64-bit, 32-bit | 64-bit, 32-bit | 64-bit, 32-bit |
| Signature required: | Embedded or catalog file | Embedded or catalog file | Embedded or catalog file | Embedded or catalog file |
| Signature algorithm: | SHA2 | SHA2 | SHA2 | SHA2 |
| Certificate: | Standard roots trusted by Code Integrity | Standard roots trusted by Code Integrity | Microsoft Root Authority 2010, Microsoft Root Certificate Authority, Microsoft Root Authority | Microsoft Root Authority 2010, Microsoft Root Certificate Authority, Microsoft Root Authority |
In addition to driver code signing, you also need to meet the PnP device installation signing requirements for installing a driver. For more info, see Plug and Play (PnP) device installation signing requirements.
For info about signing an ELAM driver, see Early launch antimalware.
Signing a driver for internal distribution only
In some cases, you may want to distribute a driver internally within a company rather than via Windows Update. To do this without requiring that computers running it are in test mode, use the following procedure:
- Register for the Hardware Dev Center.
- Review the Hardware dashboard FAQ and sign appropriate agreements.
- Upload codesign certificates.
- Sign drivers locally using any codesign certificate that you have already registered in Partner Center.
- Package drivers in a CAB and sign the CAB using the above codesign certificate.
- Submit the CAB to the Hardware Dev Center for signing.
- If the submission is approved, the Hardware Dev Center returns the driver with a Microsoft signature.
- Distribute the driver internally.
See Also