Fix “Unable to Authenticate” or “Failed to Log in” Sign in Error on Pokemon Go App

Pokemon GO is Niantic’s biggest game, so their support for it is basically unending. Ever since its rise back in 2016, it has maintained popularity among avid Pokemon fans around the world.

If you’re a Pokémon GO fan looking to enjoy some gameplay on a brand new day, it’s probably quite annoying to encounter an error message like “Unable to Authenticate” or “Failed to Log in.” We can help with such situations thanks to our thorough guide.

Any of these authentication issues mainly revolves around the lack of a stable connection to your Internet network or mobile data, making it almost impossible to sign in and gain access to the game.

How to Troubleshoot & Fix Pokemon Go App Unable to Authenticate or Failed to Log in Error

Fixing this error will require troubleshooting. We’ve included multiple solutions, so follow the steps for each one until you find one that works for you. It shouldn’t take too long to resolve any failed login authentication problems on Pokemon Go.

Verify Mobile Internet Network Connection Speeds

It’s likely that this issue is being caused by a poor mobile data connection or cellular reception. The best way to confirm this is by performing a quick check.

1. Open the speedtest.net website
2. Click on the giant GO button in the middle
3. Record the results you’ve observed
4. If you’re getting less than 1 Mbps download speed, this could be the problem

Having a low download speed can negatively affect the quality of your connection, so be sure to check carefully.

Check the Pokemon Go Service Status for Server Issues

If the game is currently receiving an update or experiencing downtimes, you’ll be able to tell from the server status.

1. Go to the official Pokemon Go Status website
2. If it is down, you have no choice but to wait until it recovers. Until then, you’ll have to login later
3. If the servers are fine, check out the other solutions presented

Uninstall and Reinstall Pokemon Go App on your Device

You can always uninstall this app if you want to avoid the stress of excessive tweaks to your settings. Reinstalling an app has consistently proved to be a reliable way for users to avoid persistent issues.

Uninstalling the App

1. Go to your Pokemon GO app and hold it until a pop up window appears
2. Tap on Uninstall
3. Wait for the app icon to disappear

Re-installing the App

1. Go to the Apple App Store or Google Play Store
2. Type Pokemon GO in the search bar
3. Go to the app and select Install
4. Wait for the installation to finish and sign-in

Update Pokemon Go to the Latest Version Available

Bugs can emerge if you’ve been on an older version of the app. Here’s what you need to do if you want to successfully get rid of them.

iOS

1. Open the Apple App Store
2. Select your profile icon from the top-right
3. Scroll down and select Pending updates
4. Find Pokemon Go
5. Tap Update

Android

1. Open the Google Play Store
2. Find the Pokemon Go app
3. Check for updates and install
4. See if the problem persists

Pokemon Go is one of the best ways to enjoy the full Pokemon experience similar to what you can get in the Nintendo games. With this guide, you’ll be able to get full access to the game and work your way around one of its most frustrating interactions.