There are a few possible reasons why your PC is having trouble connecting to a mobile hotspot. First, make sure the OS is updated. Windows Update can help you with this. On your mobile device, check for updates in the Settings app or Settings menu. Also, try temporarily disabling any security programs you may have installed on your computer. These programs may be blocking everyday network-related events.

There are Various Methods to Connect Mobile hotspot to the PC-Windows operating systems.

Reboot Modem or Router

If you're having trouble connecting to your mobile hotspot, you might be experiencing a slow internet connection. If this is the case, try rebooting your modem or router. This should resolve the problem quickly. Rebooting your modem or router will also prevent malicious attacks by kicking out unwanted devices from your network. This is an extra security measure, so it's worth trying whenever you encounter connectivity problems.

If you've tried the above steps, but still have no success, you should try to reboot your modem or router. To do so, unplug the power cord from your modem and then press the power button. Wait a couple of minutes for the device to reboot and then test your connectivity. Depending on the type of device, the process may vary.

If you've tried resetting your network settings, but still have no luck, try rebooting your modem or router. If this doesn't work, you can contact your internet service provider to see if the problem has been resolved. Many times, rebooting your router or modem will resolve the issue. Also, rebooting your PC can help you access the internet at a much faster speed.

Disabling Airplane Mode

First, turn off the airplane mode on your phone. Click the network icon and click the Airplane mode button, which is found on the notification bar or the bottom-right corner of the Lock screen. 
Then, click the toggle switch to the off position. The switch will turn itself back on once you do this. However, you must be careful and not make any mistakes when editing the Registry. You could harm your device by doing so.

You can also check: Why My Laptop Not Connecting to a Mobile Hotspot Windows 7Quora

To disable Airplane mode on iPhones, press the Home key and tap the Navigation key. Select Settings. Click Airplane Mode and turn on the switch. Next, you must sign into your mobile hotspot to turn Airplane Mode on and off. Then, tap the Reset network settings and enter the passcode to confirm. Once the network is restored, you can start using your phone's mobile hotspot.

Disabling airplane mode when connecting to a mobile hotspot is also useful for traveling. You can use an offline music player to play local music. However, you should make sure that you sync your music player to your phone first. You can also check your Internet provider to find out if there is network downtime. Disabling airplane mode when connecting to a mobile hotspot

Rebooting your Mobile Hotspot

If your PC keeps experiencing issues connecting to a mobile hotspot, the first step is to reboot your PC. Whether your mobile hotspot is a Windows 10 product or a third party, the process will reboot your PC in a clean state and resolve any problems that are related to software. 

Updating your Network adapter driver should resolve the issue and fix any other issues you're having. You can do this by going to Device Manager and typing in "Network Adapter." Once you've updated this driver, reboot your PC to finish the process.

If this still doesn't work, you can install a third-party program that fixes the problem. Some of these programs include a network analyzer, a system firewall, and a malware removal program. If these programs aren't turned on, you should turn them on. Another way to check if your mobile hotspot is running correctly is by disconnecting and reconnecting it with the Ethernet cable.

Changing the network settings on your mobile hotspot may also be the cause of the problem. If the issue is with the mobile hotspot's Wi-Fi adaptor, it may be a problem with that device. To fix this issue, uninstall the application that's causing the problem. In addition to deleting the applications, you may also need to restart your PC in normal mode.