Usb tethering greyed out samsung. FOLLOW US ON TWITTER: http://bit.
Usb tethering greyed out samsung. My phone is rooted with an official firmware.
Usb tethering greyed out samsung Feb 18, 2022 · My S21 ultra's USB tethering option is grayed out even after connecting with the data cable. Gears I use:Velbon Sherpa 200 R/F Tripod With 3 Way Panhead h Community run sub for all things Samsung Members Online • markjones88. This app requires root permission. I've seen that clearing greyed out options pretty frequently. Galaxy S Any idea why? The function doesn't Oct 30, 2023 · In this article, we will discuss how USB tethering works, how to enable USB tethering on your Samsung Galaxy smartphone, and all other important information such as USB tethering supported platforms/devices, data usage when USB tethering is enabled, whether it causes battery drain, and security aspect of USB tethering that you should know. 0 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Mar 4, 2022 · Step 4: Tap the switch next to Bluetooth tethering. Has anyone found success with their attempts? I tried using a USB-C to USB-C cable directly and I can charge, but I can't activate USB tethering. Samsung requested i do a network reset, Apps default reset and then full Feb 14, 2023 · Learn how to turn the USB Tethering on or off on the Samsung Galaxy S23 lineup. I tested this on a OnePlus 6 running Android 10 and the settings change persisted across Hi, i'm having trouble with this and i can't find an answer anywhere about this topic: i can't tether through usb to my pc I haven't tried a different cable yet, but i did try 2 different pcs, same result: the phone says no USB devices connected, even though it is currently charging on the pc. It is the true successor of Samsung Experience and TouchWiz. I click it and then go to change to static Mar 26, 2022 · Greyed out usb tethering. If that sounds like your problem, here are seven ways to fix USB tethering when it won't work. Ethernet tethering - Share your phone's internet connection using ethernet adapter. Samsung Galaxy S9. 0. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Mar 11, 2022 · @gcarlin1: Have you tried disabling USB tethering on your Note 20, and enabling it on your Tab A8 to see if this helps?I do appreciate your concerns about the affect that the prolonged use of a hotspot might have on your battery, although you may wish to monitor this via Settings > Battery and Device Care > Battery, to see if the Note 20 is capable of maintaining the connection. " Jul 10, 2022 · USB Tethering greyed out Causes and Fixes. That way, a malevolent person cant just connect any usb device to your phone and drain your data. Mobile USB Tethering Greyed Out Solved Fixed Step by StepThis videos is about enabling greyed out usb tethering option from android mobile tethering and hots Oct 11, 2015 · as a security feature, android requires that your phone be switched to a usb data transfer mode (which requires unlocking) before enabling the tether option. Please advise. Wi-Fi is turned off when USB tethering or Mobile HotSpot is active. Wi-Fi Hotspot greyed out – How to fix it in 2 minutes. I need USB Debugging enabled. I can't get it to work. TIA Sep 29, 2024 · Wi-Fi tethering is a function included in Samsung Android smartphones that allows you to share your device's Internet connection with other devices. “USBS Debugging” is still greyed out. 3Fees. Previously when have a connected usb lead (Samsung), usb would show in notifications and clicking on would bring up usb settings (files and media /media etc) now nothing Learn how you can enable or disable USB Tethering on the Samsung Galaxy S24/S24+/Ultra. ly/10Glst1LIKE US ON FACEBOOK: http://on. 99 $1,799. If yes, enable it and then connect the cable back. The phone has a working mobile data conection (at this moment turned on) and is connected to the laptop via a USB-C cable (with scrcpy working over USB. #galaxya13 Apr 24, 2018 · This video show How to Enable or Disable USB tethering in Samsung Galaxy S9 or S9+. Tried different cables. Topic Options. Android 10. 4 via a USB Connection to a Samsung Galaxy S21. But what went wrong? My usb tethering is greyed out on my huawei vitria phone. On the tablet, USB tethering is grayed out adn it says "no USB devices connected". When USB tethering is not working, it's best to run a troubleshooter that can address internet problems, like the one called Network and Internet in Windows 11. (Maybe those posts Nov 11, 2023 · You can use a USB cable, the one that you charge your phone with, to share your phone’s internet with any laptop or computer. 212 - I’ve tried USB tethering on two Android Phones (PocophoneF1 and Samsung S20 FE). Oct 5, 2015 · I wrestled with greyed-out USB tethering for 3 days. From the standby screen, tap Apps. Here’s what you need to do: Connect your phone to the computer or laptop using a USB cable. I factory reset, changed VPN settings (when for an unknown reason I lost data capacity), read all the forums, etc. Nov 8, 2020 · Any other comments: Since the last update, the usb tethering is greyed out and upon clicking it the settings app crashes. Anyone else have this problem? Any fix? - 2810970 Feb 13, 2024 · Here's how to turn on and off USB tethering on the Samsung Galaxy S24, S24+, and S24 Ultra. 2. I can't find a direct "yes" answer online. I bought it about one month ago. Feb 13, 2024 · Solved: On my S24 Ultra usb debugging is greyed out so as not to allow me to turn it on. The USB tethering option will only be available if the phone is connected to a computer or another device. Select More networks in Connections. Select Settings. Apr 20, 2021 · Under Setting>Tethering & Mobile Hotspot>USB Tethering check the radio button. When this feature is enabled, your phone acts as an acting router, capable of granting access to other devices that are associated with the router. Complete USB Tethering. Any thoughts? in Galaxy A Series 07-03-2024; Galaxy A71 - Bluetooth Earbuds - Phone doesn't use the built-in microphones in my earbuds in Galaxy A Series 28-11-2023; A71 Notification Vibration Issue in Galaxy A Series 16-02-2023 Learn how you can share internet connection to computer using USB tethering on Samsung Galaxy S10 / S10+. This video demonstration is on Android 13. Why is USB tethering disabled on Samsung On5? I faced the same problem of USB tethering option being disabled when I updated the software on my Samsung Jun 4, 2023 · Finally solved, I hope it helps, recently got the USB C connection fixed, and power, although charging the phone USB C was partly broken (hope this makes sense) after replacement everything is working as new! Mar 29, 2024 · USB tethering greyed out when I try to connect to a Philips monitor USB to HDMI cable. That’s it. The "help" on the phone indicates: "To turn on USB tethering, you must have the Smartphone Mobile Hotspot service added to your payment plan. How do fix this? And NO, there is nothing wrong with my USB cable. θ Buy now Shop with an expert Feb 28, 2023 · Probably you've connected the USB cable from the computer to your phone and you can't be able to enable USB tethering. Jun 28, 2024 · If you are having a problem with the USB Tethering option greyed out when connecting your mobile hotspot to your PC via USB, you can follow these step to fix it: Step 1 Go to Setttings to enable Developer Mode . Feb 16, 2017 · Windows 10 selected an older NDIS driver in default so that after connecting to the internet with USB tethering, it becomes extremely laggy and unusable. This will apply to the S23, S23+ and S23 Ultra. The solution is to switch the usb interface from charging to something else, such as mtp Oct 2, 2016 · Usb Tethering, grayed out? Thread starter Morgana Hilra; Start date Oct 2, 2016; News Samsung Display showed 'Slidable Flex' and rollable laptop concepts at CES 2025. Is there something that I can do to rectify this. The USB cable is connected to the laptop; charging and USB debugging is working fine. 5. Firstly, try changing the USB cable and check whether your USB tethering is still greyed out or not. The option will be grayed out if no device is found. In this tutorial I use Samsung Galaxy S9 SM-G960FD International version Feb 13, 2024 · Thanks. Read: https://www. the Slate also says no USB device is connected. Jan 22, 2017 · 3 days ago my phone would connect to my computer perfectly fine, but now it isn't working. Turn it on and connect your USB Type-C cable to your computer and the Galaxy Sep 20, 2023 · A tutorial on, how to fix if the USB tethering is not working on your Android phone. That is all. You can also try disabling USB selective suspend. Change USB Mar 12, 2021 · When the mobile internet connection is shared with a connected computer or laptop using physical USB data cable then it is called USB Tethering. Open Device Manager. Dec 3, 2022 · Learn how you can enable or disable USB tethering on the Samsung Galaxy A13. Go to Settings > Connections > Mobile Hotspot and Tethering on your phone. Any thoughts? in Galaxy A Series 07-03-2024; Earphones dropping out since UI 6. There are no videos on how to do this with the FE, only the Plus and Ultra. Any… Mar 8, 2023 · Samsung Galaxy A14 USB tethering settings: Learn here how to do USB tethering in Samsung Galaxy A14 smartphone. It is the software layer of Android, WearOS, Windows and Tizen. Any solutions or recommendations much appreciated. Need internet on your laptop but WiFi is out? This video shows you EX I can not seem to achieve Internet connection to my Samsung A8 tablet. Mar 7, 2024 · Samsung Community: Products: Smartphones: Galaxy A Series: USB tethering greyed out when I try to connect to a Philips monitor USB to HDMI cable. " Nov 25, 2022 · Hi together today I bought the fp4 :slight_smile: And at home I wantet to try different things. That is what needs to be resolved. Tethering refers to sharing y Starting today my USB Tethering just greyed out for some reason and I can't share the internet on my PC any more. Neither phone detects a USB device connected and the USB Tethering option is greyed out and not selectable on the phone menu. Turn on USB tethering. There are a couple of reasons for this Oct 14, 2024 · If USB tethering doesn't work, even on turning the Wi-Fi off, check the connection mode on your phone. fb. Switch to a different port on your system and Jul 7, 2023 · Nothing. Sometimes USB debugging option greys out and says "USB Debugging is disabled by server policy" when you connect an LG phone to the computer. I have a Samsung s21 ultra and I'd like to specifically tether internet via wired cable to my iPad mini 6. ADMIN MOD USB tethering option is greyed out . This has nothing to do with File Transfers. But sometimes, the device does not identify the other device, and you may end up seeing the option as greyed out even after plugging the USB. Check the USB tethering box. In the "Power Options" section of the "Control Panel," select your active power plan and click on "Change advanced power settings. Android 9 Pie. Due to a very bad phone-net I want to use my LAN. Gears I use:Velbon Sherpa 200 R/F Tripod With 3 Way panhead https://amzn Oct 19, 2022 · Hi all About Ethernet Tethering (No USB Ethernet Adaptor Connected) I need to share the network with my Samsung Galaxy S9+ phone without installing a SIM card. Settings > System settings (at the bottom) > Developer options > Default USB configuration. To Donate to ITJUNGLES so I If it's your first time to enable developer options and USB debugging, you need to go to Settings > About then tap Build Number for 7 or 8 times to get Developer Options available. Windows diagnosis says invalid IP configuration. Feb 8, 2023 · Hi Have just purchased a Tab 8. There are several automated tools built-in to Windows that can address problems that you're not even aware of. The greyed out “USB Tethering” was enabled. org/how-to/turn-on-off-usb-tethe Apr 29, 2024 · 2 Ways to Fix Issue USB Tethering Not Working on Samsung Galaxy A15 5G | USB Tethering Settings,Samsung, Samsung galaxy, mobile, phone, android, android 14, Jul 5, 2024 · Run a Windows troubleshooter. Sep 4, 2020 · 2. Note: Data tethering is carrier dependent and requires an appropriate data plan. It’s because your Jan 26, 2024 · Trying to connect an ethernet adapter to the s23 ultra, Andoid 14, one UI 6. 0 usb tethering issue is solved. Gears I use:Velbon Sherpa 200 R/F Tripod With 3 Jun 20, 2023 · This will prevent power-saving settings from interfering with your USB tethering. A defective USB port is one cause of a device not being detected. May 10, 2024 · I'm using a Samsung Galaxy A7 2016 on Android 7. Remove USB cable and check if the option is available. USB tethering - Share your phone's internet connection using USB cable. I can turn on the WIFI hotspot for my laptop tho. Tethering plans are generally not unlimited and significant charges may be incurred if the included data allowance in exceeded. Turn on USB tethering on your phone. I noticed usb tethering is off and greyed out. Thanks. Go to Network Adapters. Do you know you can Turn ON USB Tethering on Samsung Galaxy S24/S24+/S24 Ultra to share Mobile Data or WiFi Internet to your Windows Computer using a USB Cab. Jul 24, 2021 · USB Tethering Grayed Out Android | USB Greyed Out Android | USB Preferences Greyed Out AndroidWelcome to my Technical Channel! I’m Praveen Gosain and I am of Apr 15, 2024 · Samsung A54 5G - serial nr rzcw713xfxp - SIM Manager slot 1 and slot 2 greyed out in Galaxy A Series 16-11-2024; contacts on phone do not synchronise with Microsoft account in Galaxy A Series 29-10-2024; No NFC function on AO5s in Galaxy A Series 25-10-2024; Galaxy A15 5G can't use ethernet connection in Galaxy A Series 22-10-2024 Mar 13, 2023 · Learn how you can enable or disable USB Tethering on the Samsung Galaxy S23/S23+/Ultra. #5minutestech #samsunga14 #samsunggalaxya14 #u Sep 11, 2018 · Select USB Tethering (grayed out until you connect the USB Type-C cable) This works the same way as the mobile hotspot. It indicates "tethered". Any thoughts? Aug 2, 2023 · 2 reset default USB settings. It's embarrassing. Feb 3, 2021 · USB tethering greyed out when I try to connect to a Philips monitor USB to HDMI cable. I have usb c type ethernet adapter works fine with galaxy phone but not a8 tablet as ethernet option greyed out. 0, in one ui 3. webproeducation. Reasons for not detecting a device can be a faulty USB cable, faulty port, a charge-only cable, software bugs, and more. How to reproduce: 1. I have proven the fault is in the s22 as tethering works with out dropout using my s7 on the same laptop. 3. Reboot and Update Everything Jun 23, 2021 · The USB tethering option is always greyed out until the device detects a USB device. I have switched on developer settings and changed my usb preferences to MIDI. USB tethering is greyed out. I can use mobile hotspot (I don't have Wifi as an option for my PC) but not USB tethering for some reason. " Look for "USB settings" and set "USB selective suspend setting" to "Disabled. At first I thought it was the usb cable, but after purchasing a new cable it still doesn't work. ly/10Glst1LIKE US ON F Jan 6, 2020 · This video tells you about fixing USB Tethering in android-x86 using "Tether86" app from playstore. From: APP; Since the last update, the usb tethering is greyed out and upon clicking it the settings app crashes. If I connect the ethernet adapter is activates. If you have been facing this issue, try changing the USB cable and the USB port. Then you can go to the Developer Options to enable USB debugging. What can I USB tethering greyed out Open | Phone On an oppo phone I have mtp selected in developer settings PC drivers are up to date data saver is off and I have a cable that I know works because it works on my other phone yet USB tethering is still greyed out and my PC doesn't even say there is a phone connected yet still charges it Sep 25, 2024 · Below are the various ways to do tethering:- 1. 1. My samsung galaxy iii will not connect using foxfi. S22+ usb tethering not working in Galaxy S22 12-10-2022; Oct 25, 2012 · When I try to tether phone via usb to my fedora 17 or windows 7 pc, the option for usb tethering is always greyed out on the phone. Pls suggest. 0 in Galaxy A Series 04-01-2024; A54 dropping wifi connection in Galaxy A Series 24-12-2023; Galaxy Watch 2 and A14 in Galaxy A Series 15-08-2023 Jul 10, 2015 · I unplugged the USB cable, turned on the Wi-Fi, enabled the USB tether option, then plugged in the USB. This worked perfectly, after setting the default USB mode to tethering in developer options all I do is connect a usb-c cable from the S10 to the PC (windows 11) and it automatically connects and has internet. It went on charging it without giving the options to transfer the data to the computer. Dec 4, 2020 · USB TETHERING PROBLEM IN M30S MODEL in Galaxy M 03-26-2022; Samsung m21 in Galaxy M 03-25-2021; Problem with camera focus and hotspot tethering in Galaxy M 02-15-2021; usb tethering issue in Galaxy M 12-31-2020 Mar 3, 2021 · Learn how you can enable/disable USB Tethering to share the internet connection on Galaxy S21/S21 Plus/Ultra. Download Tether86 app f Dec 14, 2021 · Here's how you use USB tether to obtain internet on a Samsung Galaxy Tab A7 10. Jelly bean XXLFB The cable is plugged in. It gives a high-speed connection while sharing the internet between mobile devices and connected computer systems, it is because Wired connection is quite stronger than Wireless LAN connection. If changing the USB cable doesn’t work, change the port on your system. When I plug it in, it shows the message. However, I did select “Transferring files” as you suggested. Here's how to set up a tethered connection via USB or Bluetooth for your Galaxy S9 / S9+. Sometimes the connection won't work after enabling the USB tethering option, and sometimes the USB tethering menu entry will be grayed out (or not present to begin with!). and then after a few seconds. I tried 2 adapters, same result. Tap the USB tethering switch ON and tap OK to confirm. One of the cables worked. Apr 15, 2024 · Solved: Usb debugging grayed out even if the developer option is enabled - 2863350. Up until the device detects a USB device, the USB tethering option is constantly greyed out. TYSM! Samsung tech support couldn't tell me that! 0 Likes Reply. Any advice is I'm trying to figure out how to unlock the USB tethering (it's greyed out) on a Samsung S21 FE. Select Tethering and portable hotspot. Many thanks Welcome to r/oneui: a Samsung-developed user interface powering more than hundreds of millions of Galaxy smartphones, tablets, foldables, laptops, watches etc. So the only option is to find a fix. Connect an Android Phone to your computer. However, on occasion, even after putting in a USB, the device may fail to recognize the other device, leaving the choice greyed out. If no ethernet adapter is connected to the phone's usb c port then the setting is grayed out. The USB Tethering is not activating on my old Lenovo TB-8504X tablet with Android 8. Jun 10, 2020 · Learn how you can set USB Connection to USB Tethering on Galaxy S20 / S20 Plus / S20 Ultra. Aug 4, 2018 · From the Home screen, tap Apps > Settings > Network tab > Tethering > USB tethering. its sprint, so i downloaded the add-on, and i installed the pdanet version. The option of USB tethering is NOT greyed out, but tapping on it doesn't turns it on. either i get limited c; I have merto pcs plan unlimited data,with 6gb tethering,could i use easy tether to get unlimited tethering? Android usb tethering greyed out Nov 23, 2020 · To use USB Tethering, follow these steps : 1. 4. Tethering was working up until around the last software update. How to resolve: 1. Jun 13, 2023 · This video shows how to enable the greyed out USB tethering option from the Android mobile tethering and hotspot choices, which is also useful for those who Apr 10, 2020 · Learn how you can fix USB tethering is grayed out on Android. How to transfer internet connection through USB cable between two Samsung phones? I just check by plugging both with C cable they only charge but no one device transfer internet also by enabling USB Tethering from settings. θ From $899. It worked fine with my Samsung S21 Ultra but now trying the USB tethering with my new Flip 5 and closing it ( closing the clamshell ) it will stop recognizing USB Tethering and only the Bluetooth and Wi-Fi tethering work when it is closed. Dec 31, 2020 · first update to one ui 3. i have updated my m21 to one ui 3. Feb 21, 2022 · Tap the switch next to USB tethering. 6. (THIS METHOD WORKS IF YOU DON'T SUBSCRIBE TO YOUR WIRELESS CARRIERS MOBILE HOTSPOT PLAN - iT DOESN'T USE WIFI. What is "USB E Jun 14, 2021 · USB tethering - Samsung: The Samsung device can share the Internet connection with other devices such as the PC or laptop via the USB cable, simply by connecting the Samsung smartphone or tablet to another device via USB cable. My phone is rooted with an official firmware. Despite having a $40 metal-braided, multi-tipped cord with amazing mall-metal jacks that works for charging, for tethering it wouldn't. Jul 2, 2020 · Like I'm not sure if it's always been the case with Samsung phones (I just switched over from a Pixel 2 that I used for 3 years, it had this option for as long as I can remember) but you could either go through Dev Options to change Default USB behavior to USB tether or simply click on the drop down notification that pops up whenever you plug Aug 8, 2022 · Hello, I have a Slate running on 3. d Dec 17, 2022 · When go into settings - select mobile hotspot the usb tenthering is greyed out even with usb lead connected. I think you know I need “Developer Options, USB Debugging” enabled and not greyed out. Is that the issue? If not, what is? Jan 23, 2023 · Hey guys i have a question regarding USB Tethering. I have tried some changes under "Developer options" on my Android as suggested in different posts on the internet. FOLLOW US ON TWITTER: http://bit. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. i tried downloading new drivers, tried smart switch, tried updating my S10e, nothing seems to work. Whenever you connect a smartphone to a computer via a USB cable, the phone's operating system Dec 26, 2022 · Method #1: Change USB Cable And USB Port. Mar 25, 2020 · Click on that, and choose the option which has "USB tethering" or "RNDIS" written. In case the issue still occurs. I have turned on "USBtethering" to "ON" on the phone (slide switch to the right). 0. The USB cable is not broken (It doesn't have any problem with charging). From than on, whenever you would plug the device with a PC using USB cable and unlock the device, if not unlocked already, USB tethering would automatically be enabled. I had "No data transfer" there, I changed it to "USB Tethering" And also check the neighbor menu item Select USB configuration, my default value was "Charging", so I changed it to "RNDIS (USB Ethernet)" Mar 9, 2022 · I am trying to tether a galaxy Tab A to a galaxy s9 phone by USB cable to connect the tablet to the internet by data account when wifi is down. During Discover Samsung, get up to $900 enhanced trade-in credit toward Galaxy Z Fold3 5G. But the Menu of USB-tethering an ethernet-tethering ist not activ. I get the phone into tethering mode and the connection seems to be established but the tablet doesn't connect to the internet. Bluetooth tethering - Share your phone's internet connection using bluetooth. I am trying to use the USB C port and hdmi onto the TV, however the usb tethering option is greyed out. USB tethering is ON Mar 3, 2021 · Learn how you can set a USB Connection to USB Tethering on Galaxy S21/S21 Plus/Ultra. Usb debugging is enabled Power save is turned off I have googled for an answer but have come up short. It isn't my computer because my dads samsung connects to my computer. Step 5: Pair your Samsung phone with another device you want to share your connection with. Now this simple working step will also enable your USB and Bluetooth tethering. Any help? Mar 16, 2024 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright May 29, 2024 · Need to share your Samsung Galaxy A53's internet connection with your laptop or another device? In this quick and easy tutorial, we'll show you how to enabl Sep 17, 2018 · I have been using USB tethering from my Android phone to my windows 10 laptop around 3 months ago, but now the option is not available. Disconnect the USB cable. May 2, 2024 · On my Samsung Galaxy A-24, when I open in Settings Mobile Hotspot and Tethering section, all options are grayed out, such as Mobile Hotspot, Bluetooth tethering, USB tethering, etc. If you have any su Oct 3, 2022 · Samsung Apps and Services; Network options greyed out. Try wiping the cache partition You will need to plug into a working device or pc/laptop. To turn on Wi-Fi, please turn off USB tethering or Mobile HotSpot. I use USB tethering to access the internet on my PC, but after enabling USB tethering and using it for about 5 minutes, it disconnects, and I should enable it again on my Android phone. I really need an internet connection from the USB cable to my PC because my motherboard can't do wireless. My samsung s22 usb tethering drops out after an hour. IT ALSO CONSUMES MUCH LESS BATTERY): Jun 27, 2019 · But if your Hotspot option is greyed out, no app will be able to to enable Internet connection sharing. On Settings -> Connections -> Mobile Hotspot and Tethering Ethernet Tethering No USB Ethernet Adaptor Connected is greyouted. 99 with eligible trade-in. I want to connect it to various TVs. It should be enabled before you plug in the USB cable. me/ZKP4n Apr 11, 2022 · Learn how you can enable or disable USB tethering on the Samsung Galaxy S22 / S22+ / S22 Ultra. ly/10 Jan 14, 2024 · How to share your Samsung Galaxy phone's 4G or 5G connection to your Wi-Fi router Plug in the USB-C to Ethernet adapter or the USB-C hub before activating the hotspot option on your Galaxy phone. Dec 10, 2022 · Was using usb tethering to a PC from the S10 so the PC could use internet from the S10 data plan. ). Mar 11, 2012 · Welcome to the Android Central Ask A Question forum! First, I would reboot the phone and see if that restores the feature. Samsung Galaxy S9 / S9+ - Tethered Modem Connection I just want to update this old thread to say the Samsung Flip 5 also has this issue. olafigerbycfsfblzsvposhwzbovsqtpixjipxuoxlmzwfcfa