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Error Checking for Update on Android: How to Fix It
Android

Error Checking for Update on Android: How to Fix It

Start with free space: the update has to download the package and still have room to install, and that is the number one cause of this error (Solution 1). Next, the connection and the clock: an unstable network, a VPN switched on or a wrong date make the check fail without explaining why (Solutions 2 and 3). Understand too that there are two different things: the system update, which comes from the device maker and brings a new Android version, and the security update, which arrives quietly through Google Play and does not depend on the maker (Solution 6). If the check keeps failing, clearing the update service cache usually unsticks it (Solution 5). And if the device is past its support period, there is no new update to find, however much you look (Solution 7).

TechResolve Team · Verified on Oct 31, 2026 · 8 min read
Windows 11 Not Activated: How to Fix the Activation Error
Windows

Windows 11 Not Activated: How to Fix the Activation Error

Start by reading the Activation screen, because the exact wording there already points the way (Solution 1). If the problem began after you swapped the motherboard, the SSD or the processor, the digital licence lost its link to the computer, and the Activation troubleshooter clears most of those cases (Solutions 3 and 5). If the licence was never linked to your Microsoft account, Solution 4 shows how to do it, and it is worth doing before any hardware change. A connection error or a wrong date and time break activation with nothing to do with the licence (Solution 2). And if you bought Home but installed Pro, no key will work until the edition matches (Solution 6). This guide covers only legitimate licences: bought in a shop, supplied with the computer, or issued by your employer.
How to Sync Bookmarks and Passwords Across Devices in Chrome
Browsers

How to Sync Bookmarks and Passwords Across Devices in Chrome

Chrome sync depends on one thing: being signed in to the same Google Account, with sync turned on, on both devices (Solution 1). If you see 'Sync is paused', nothing new goes up or comes down until you sign in again - Solution 2 fixes that, and it is the most common case of all. If bookmarks arrive but passwords do not, the passwords box is almost always unticked in the list of what to sync (Solution 3). On a shared computer, check you are on the right Chrome profile before anything else (Solution 4). If the browser is set to clear cookies on exit, it signs your account out every time, and Solution 5 shows how to stop that.
AirDrop Not Working: How to Fix It Between iPhone, iPad and Mac
iOS

AirDrop Not Working: How to Fix It Between iPhone, iPad and Mac

In most cases the receiving device is missing for one of three reasons: Wi-Fi or Bluetooth is off, Personal Hotspot is on, or AirDrop visibility is set to 'Contacts Only' without the contact being saved properly. Start with Solution 1 and, if the device is still missing, switch visibility to 'Everyone for 10 Minutes' in Solution 2. The receiving screen has to be unlocked and the devices within a few metres of each other (Solution 3). On a Mac, the AirDrop window in Finder needs to be open and the firewall must not be blocking all incoming connections (Solution 6). If none of that works, switching Wi-Fi and Bluetooth off and on at both ends (Solution 5) rebuilds the connection and usually unsticks the rest.
Android Bluetooth Will Not Connect: How to Fix Pairing for Good
Android

Android Bluetooth Will Not Connect: How to Fix Pairing for Good

In most cases the saved pairing is corrupted: delete the device from the list and pair from scratch (Solution 1). If it does not even appear in the scan, the accessory is probably not in pairing mode or is already connected to another device (Solution 2). When several accessories stop connecting at once, the saved-device list may have hit the limit the phone expects - clearing the old ones fixes it (Solution 4). If the scan finds nothing at all, check the nearby devices permission (Solution 5). Connecting then dropping is usually low battery, distance or interference (Solution 7).
Bluetooth Missing in Windows 11: How to Get It Back and Connect Again
Windows

Bluetooth Missing in Windows 11: How to Get It Back and Connect Again

If the Bluetooth switch vanished from Settings, Windows has stopped seeing the adapter - and that is a driver or disabled-device problem, not a pairing one. Start by ruling out Airplane mode and a hidden quick toggle (Solution 1). Then open Device Manager and check whether the adapter shows a small downward arrow, which means disabled (Solution 2). If it is not listed at all, use scan for hardware changes and show hidden devices (Solution 3). A stopped support service also takes everything down (Solution 4). If the problem started right after an update, go straight to reinstalling the driver in Solution 6.
How to Remove Malicious Extensions From Chrome and Edge Without Losing Your Data
Browsers

How to Remove Malicious Extensions From Chrome and Edge Without Losing Your Data

The classic symptoms are: the search engine changed by itself, tabs and pop-ups open without you clicking anything, ads appear on sites that never had them, and the home page became something else. Start by opening the extensions page and removing everything you do not recognise (Solution 1). If the problem continues, disable them all and re-enable them one at a time to find the culprit (Solution 2). Then restore your search engine and home page (Solution 3) and cut off notifications from sites you never allowed (Solution 4). When none of that works, resetting browser settings (Solution 5) clears the leftovers without deleting bookmarks or passwords.
App Store Not Downloading Apps on iPhone: 8 Fixes in Order
iOS

App Store Not Downloading Apps on iPhone: 8 Fixes in Order

First identify the symptom: the icon sits grey with a frozen progress ring, the Get button does nothing, or an error message appears. A stuck download is nearly always fixed by pausing and resuming or closing the App Store (Solution 2). Install errors and unresponsive buttons are usually account or clock related: check that date and time are automatic (Solution 3) and sign out and back into your Apple Account (Solution 4). If the Get button is missing entirely, app installation may be blocked in Screen Time (Solution 6). Before anything, confirm you have free storage - with none, nothing downloads (Solution 1).
Not Receiving Notifications on Android: How to Turn Them Back On in 8 Steps
Android

Not Receiving Notifications on Android: How to Turn Them Back On in 8 Steps

In the vast majority of cases the culprit is battery optimisation: Android puts the app to sleep in the background and messages only show up once you open it. Start with Solution 1, which marks the app as Unrestricted or Not optimised. If alerts keep going missing, check the app's notification permission (Solution 2) and whether Do Not Disturb or a focus mode got switched on by accident (Solution 3). When only one app is affected, its own internal setting is usually off (Solution 4). When every app is affected at once, go to Solution 6 onward.
Error 0x80070005 in Windows: What It Means and How to Fix It
Windows

Error 0x80070005 in Windows: What It Means and How to Fix It

0x80070005 is not a mysterious fault: it is the access denied code. Someone or something stopped Windows from writing to a folder, a configuration key or a service. Start by pinning down where the error appears, because that sets the route (Solution 1). If it happens while installing a program, run it as administrator and confirm your account has that power (Solution 2). If it happens in Windows Update, the pairing that fixes the most cases is the troubleshooter followed by clearing the updates folder (Solution 3). Third-party antivirus and cleanup tools are the most common hidden cause, and pausing them for a few minutes usually reveals that on the spot (Solution 4). If the error names a specific file or folder, the permissions fix in Solution 5 handles it, with the caution that solution describes.
Download Blocked by Your Browser: How to Allow It Safely
Browsers

Download Blocked by Your Browser: How to Allow It Safely

First work out who blocked it, because the message tells you the source and the real risk. If the warning came from the browser's download list, it is the browser's own safe browsing (Solution 2). If the file downloaded fine and the message appears only when you try to open it, it is the operating system's protection (Solution 4). If the file vanished right after downloading, the antivirus took it and put it in quarantine (Solution 5). Before allowing anything, confirm you are on the maker's official site and not a download portal from the search results, because that detail changes everything (Solution 6). After allowing it, check the real extension and the file size before you run it (Solution 7). And if the download is an activator, a licence generator or a file that arrived from an advert, the right answer is not to allow it: Solution 8 explains why.
Face ID Not Working: 7 Fixes to Get Unlocking Again
iOS

Face ID Not Working: 7 Fixes to Get Unlocking Again

Start with the silliest thing, because it fixes the most cases: clean the sensor strip at the top of the screen and check that a case, a badly fitted screen protector or a finger is not covering that area (Solution 1). If the iPhone says 'Face ID is not available' or asks you to set up Face ID later, restart the phone before touching any setting: that message is usually temporary (Solution 3). If it fails only in certain situations, such as with sunglasses, with a new beard or lying in bed, add an alternate appearance instead of starting over (Solution 4). Resetting Face ID and enrolling again is Solution 5, and it clears most stubborn cases. If the unavailable message comes back on its own after every restart, especially after a drop or a screen replacement, the cause is physical and Solution 7 explains what to expect.
How to Back Up Android Before a Factory Reset: Complete Guide
Android

How to Back Up Android Before a Factory Reset: Complete Guide

There is no single backup that saves everything on Android: there are four separate flows, and each has to be checked on its own. Turn on the Google account backup first (Solution 1), because it covers settings, your app list, text messages and call history. Then confirm your photos finished uploading (Solution 2), run the WhatsApp backup by hand inside the app itself (Solution 3) and check that contacts live in the Google account and not only on the phone or the SIM (Solution 4). The most expensive trap is the two-step authenticator app: it almost never rides along in any backup, and resetting without transferring the codes can lock you out of your own accounts (Solution 6). Before you press erase, run through the final check in Solution 8.
USB Drive or External Hard Drive Not Recognized in Windows: 7 Fixes
Windows

USB Drive or External Hard Drive Not Recognized in Windows: 7 Fixes

Before deciding the device is dead, find out whether Windows sees it at any level. If the computer played the connection sound but nothing appears in This PC, open Disk Management (Solution 2): very often the disk is right there, healthy, just without a drive letter. Assigning a letter fixes it on the spot and loses nothing. If there is no sound and nothing shows up anywhere, start with Solution 1 and swap the port and the cable, because bad cables and weak front ports account for a large share of cases. If the drive shows as RAW or 'Not initialized', stop and read Solution 5 before clicking anything: accepting the format Windows offers wipes everything that was on it.
How to Block Website Notifications in Chrome and Edge
Browsers

How to Block Website Notifications in Chrome and Edge

These are two different things and that is where almost everyone gets lost. Turning off permission requests stops new sites from asking, but does not silence the ones you already allowed, sometimes without noticing. To stop the pop-ups appearing right now, revoke permission for the already-allowed sites in the browser's exception list (Solution 3 in Chrome, Solution 4 in Edge). To avoid going through it again, turn off the requests entirely (Solution 5). On Android, the setting lives inside Chrome and also in Android's own notification settings (Solution 6). If the alerts keep appearing with the browser closed, it is not a site notification at all: it is a program or an extension installed on the computer (Solution 7).
App Keeps Closing by Itself on iPhone: How to Fix It
iOS

App Keeps Closing by Itself on iPhone: How to Fix It

An app that opens and closes immediately almost always has a corrupted or incompatible installed version. Start with the basics, which fix most cases: force quit the app (Solution 1) and restart the iPhone (Solution 2). If it continues, go to the App Store and update the app, because sudden crashing is usually patched by the developer soon after it appears (Solution 3). Nearly full storage is a silent and very common cause: free up space before trying anything else (Solution 4). If only one app misbehaves, the definitive route is offloading or reinstalling, and Solution 6 shows how to do that while preserving data. Before deleting any app, confirm its content is in the cloud or in a backup, because not every app keeps data off the device.
Forgot Your Android Phone Password: How to Unlock Without Losing Data
Android

Forgot Your Android Phone Password: How to Unlock Without Losing Data

Be realistic before you start: once the lock screen is active and the password is forgotten, the official routes that preserve data are few and depend on what was configured before the problem. Start with calm, methodical attempts and with Smart Lock, which unlocks the phone by itself near a trusted place or a trusted device (Solutions 1 and 2). If your phone is from a maker that offers remote unlocking through its own account, that is the one method that usually returns access with data intact (Solution 4). If none of that applies, the outcome will be erasing the phone, and the most important step comes first: make sure you know the email and password of the Google account that was on it (Solution 6), or it stays unusable even after a factory reset. This guide covers official methods only: tools that promise to bypass account protection do not work reliably and are usually a scam.
Windows Update Stuck: How to Get the Update Moving Again
Windows

Windows Update Stuck: How to Get the Update Moving Again

Before touching anything, confirm it really is stuck: a large update can sit 20 or 30 minutes on the same percentage while it works on the disk (Solution 1). Past that, the culprit is almost always a corrupted download sitting in the SoftwareDistribution folder. The fix that solves most cases is stopping the wuauserv and bits services, renaming that folder and starting the services again, which makes Windows download everything from scratch (Solution 4). Before that, it is worth running the built-in troubleshooter, which is quick (Solution 2). If the error returns after the cleanup, system files are damaged and the answer is DISM and SFC (Solution 6). When one specific update always fails at the same point, download it by hand from the Microsoft Update Catalog (Solution 8).
DNS_PROBE_FINISHED_NXDOMAIN: How to Fix This Chrome Error
Browsers

DNS_PROBE_FINISHED_NXDOMAIN: How to Fix This Chrome Error

NXDOMAIN means Chrome asked 'where is this site?' and got back 'that name does not exist'. First, open any other site: if all of them fail, the problem is your DNS; if only one fails, start by checking how the address is spelled (Solution 1). For the general case, flush the system DNS cache with ipconfig /flushdns (Solution 2) and then swap your provider's DNS for a public one such as 1.1.1.1 or 8.8.8.8 (Solution 3). If the error happens only in Chrome while other browsers open the same site, clear Chrome's own internal cache (Solution 4). A VPN, a proxy or antivirus web filtering is the most common hidden cause when none of that helps (Solution 6).
iPhone Slow After Update: How to Improve Performance
iOS

iPhone Slow After Update: How to Improve Performance

If you updated recently, take a breath: the iPhone spends its first 24 to 48 hours rebuilding the search index, reprocessing the photo library and updating apps in the background. During that window it runs slow, gets warm and uses more battery, and it clears up on its own. Solution 1 explains how to speed that process along instead of fighting it. If more than two days have passed, start with Solution 2, which is restarting, and Solution 3, which is freeing storage: nearly full storage is the number one cause of lasting slowness. Solution 4 shows how to check battery health, because a worn battery makes the iPhone slow itself down on purpose. And if nothing works, Solution 8 has the reset that does not erase your data.
Phone Overheating: Causes and How to Fix It on Android
Android

Phone Overheating: Causes and How to Fix It on Android

First separate normal from abnormal. Getting warm during fast charging, heavy gaming, video recording or long GPS use is expected: the phone gets warm or hot near the top and returns to normal within minutes. What is worrying is heating up sitting in your pocket with the screen off, always heating in the same spot, or heat that comes with the battery draining fast. In those cases go to Solution 2 and find which app is consuming, because most of the time that is it. Solution 3 covers charging, the second most common cause. And read Solution 8 before anything else if the back is swollen, if there is an odd smell, or if the phone gets too hot to hold: that is a safety matter, not a settings one.
Webcam Not Working on Windows 11: How to Fix It
Windows

Webcam Not Working on Windows 11: How to Fix It

Before downloading any driver, open Solution 1: the Windows camera permission is the number one cause, and it has three separate switches that can be off, including one just for desktop programs. Then check the laptop's shutter or shortcut key, in Solution 2, because many laptops have a physical cover nobody remembers. If the picture is black and the camera-in-use message will not go away, another program is holding the camera: Solution 3. Use the Windows Camera app as a test, in Solution 4, to tell whether the problem is the system or only that meeting program. Drivers come only in Solution 5, and that is where most guides mistakenly start.
ERR_CONNECTION_TIMED_OUT: What It Means and How to Fix It
Browsers

ERR_CONNECTION_TIMED_OUT: What It Means and How to Fix It

ERR_CONNECTION_TIMED_OUT means the browser asked for the page and waited for an answer until it gave up. Before anything else, answer one question: does the error show on one site or on all of them? If it is one site, the problem is almost never yours, and you go straight to Solutions 2 and 3. If it is every site, the problem is your connection or your computer, and the path is Solutions 4, 5 and 6. Solution 1 shows how to work that out in half a minute using your phone's mobile data. And if the error only shows on the work network or only with the VPN on, skip to Solution 7.
iPhone Will Not Connect to Wi-Fi: How to Fix It Step by Step
iOS

iPhone Will Not Connect to Wi-Fi: How to Fix It Step by Step

First find out whose problem it is: if another device in the house browses fine on the same network, the fault is in the iPhone, not the router. If the iPhone keeps asking for the password in a loop or says it could not join, go straight to Solution 2 and forget the network before trying again. If it connects but no page loads, the path is different: look at Solution 5 (networks that need a login) and Solution 6 (VPN, DNS and privacy filters). Solution 4, turning off the private Wi-Fi address, fixes most cases on company, school and hotel networks. Solution 8, resetting network settings, is the ace up your sleeve: it almost always works, but it wipes every Wi-Fi password saved on the device.
How to Recover Deleted Photos on Android: What Actually Works
Android

How to Recover Deleted Photos on Android: What Actually Works

Almost every photo deleted in the last 30 days still exists, in one of two places: the Google Photos trash (Solution 1) or your phone maker's gallery trash (Solution 2). They are separate bins with their own deadlines, and both are worth opening before you conclude anything. If the photo is in neither, check whether it only left the device but is still in the backup (Solution 3) or whether it sits archived, in a secure folder or inside an app (Solution 4). Be realistic about the deadline: past 30 days with no backup, the chance of recovering a photo from internal storage is very low, and Solution 7 explains why. If the photos were on a memory card, it is a different story and Solution 6 is the route. Do all of this as soon as possible and use the phone as little as you can until you finish.
Forgot Your Windows 11 Password: How to Get Back Into Your PC
Windows

Forgot Your Windows 11 Password: How to Get Back Into Your PC

It all starts with one question: does the sign-in screen show an email address under your name? If it does, the account is a Microsoft account, and you reset the password on the recovery site from another device in minutes (Solution 4). If only a name appears, it is a local account, and the ways out are the security questions (Solution 5) or a reset disk created beforehand (Solution 6). Before that, try the PIN: nearly every Windows 11 machine has one, and it can be reset from the lock screen itself (Solution 3). If the computer has another administrator user, they can change your password in thirty seconds (Solution 7). Solution 8 is the last resort and involves losing programs and, depending on the path, files.
Videos Not Loading in Your Browser: How to Fix It on YouTube and Other Sites
Browsers

Videos Not Loading in Your Browser: How to Fix It on YouTube and Other Sites

If the video stalls only in the browser and plays fine in a phone app, the problem is on your computer, not on the site. Start by turning off the browser's hardware acceleration (Solution 1): it is the most common cause of a black screen with sound. If the video never starts and the spinner keeps turning, the suspect is an ad-blocking extension (Solution 2). When the video opens but stutters or throws a playback error, clear that site's cache and cookies (Solution 3). Run a quick test in a private window before changing anything: if it works there, an extension or cached data is to blame, and you skip straight to Solutions 2 and 3.
How to Free Up Space on iPhone Without Deleting Your Photos
iOS

How to Free Up Space on iPhone Without Deleting Your Photos

Start by opening the device storage screen to see your apps listed by size: that list tells you where the space went (Solution 1). On most full iPhones the bulk sits in three places, and none of them is the photo library: large apps you barely use, videos and music downloaded from streaming services, and years of attachments piled up in Messages (Solutions 2, 3 and 4). Offloading an app frees the program's space and keeps your data, so nothing is lost. If you use iCloud Photos, Solution 5 keeps the full-size versions in the cloud and leaves only light ones on the device, without deleting a single image. Leave Solution 8 for last, when System Data is bloated with no explanation.
Phone Will Not Connect to Wi-Fi: How to Fix It on Android
Android

Phone Will Not Connect to Wi-Fi: How to Fix It on Android

Before changing any setting, decide which case is yours. If the phone tries and falls back to 'Saved' or 'Authentication error', the problem is the network profile stored on the device: go to Solution 1. If it connects but the Wi-Fi icon shows an X or an exclamation mark, or pages will not open, the problem is the route out to the internet: Solutions 4 and 6. If other devices in the house browse normally, the router is fine and the fault is with the phone. When none of that works, Solution 7 resets the network settings and wipes any tangled configuration without deleting your files. Save Solution 8 for when several devices fail at the same time.
Disk at 100% Usage in Task Manager: How to Fix It
Windows

Disk at 100% Usage in Task Manager: How to Fix It

The first step is finding out what is using the disk, not switching services off in the dark: open Task Manager and sort by the Disk column (Solution 1). In practice, three culprits account for most cases: Windows Update downloading or installing in the background (Solution 2), the SysMain service (Solution 3) and Windows Search indexing (Solution 4). Before changing anything, check on the Performance tab whether your drive is a mechanical hard disk or an SSD. On an old hard drive, hitting one hundred per cent is expected behaviour under load, and no tweak will turn it into a fast disk: swapping it for an SSD is what actually solves it (Solution 8).
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