How to Fix Diablo 3 Error Code 1

Prasiddh Thakkar
Prasiddh Thakkar

If you love to play role-playing games, you must have played Diablo 3. Although this game is extremely popular and a masterpiece in genre-defining action RPG still it has several bugs and issues such as error code 3002, and 395002, crashing on startup, and won’t launch, among others. Adding to these issues and errors, many Diablo 3 gamers are running into an error code 1. This is one of the common errors that can appear when players are attempting to launch the game. If you are also encountering the same error, worry not. In this guide, we will discuss what are the reasons behind Diablo 3 error code 1 and how we can fix it with some quick and easy workarounds.

Fixing Diablo 3 Error Code 1

There can be multiple causes why you are running into an error code 1 in Diablo 3 such as corrupted or missing game files, unstable internet connection, or outdated game version. Thankfully, this guide has covered all potential solutions to fix this error. 

1. As we have stated, an outdated game version is one of the main reasons why you are seeing error code 1 in Diablo 3. So, firstly try updating your game to the latest version. You can check it on your Blizzard Launcher for any new updates.

2. The next thing you need to do is to make sure your internet connection is fast and stable. You can also try resetting your router/modem by following these steps:

– Unplug the power and Ethernet cables from your router/modem

– Wait for about 2-3 minutes for the modem to fully power off

– Reconnect the power and Ethernet cables to the modem

– Wait for the Internet light to turn solid, then check if the internet is working properly

– Once done, launch the game and the error code 1 should be resolved

3. Another reason why the error code 1 is triggering in Diablo 3 is insufficient access to your computer files. If that is the reason, you need to run the game as an administrator. To do that:

– Click on the Windows Search Bar and type Diablo 3

– Once the application is up, right-click on it and then select Run as Administrator

– Once done, relaunch the game and you should be good to go

4. The next method we recommend is to repair the corrupted or missing game files. For this: Go to Steam Library >> Right-click on Diablo 3 >> Properties >> Local Files >> Verify the integrity of game files. After the scanning is completed, relaunch the game.

5. If nothing worked, your last resort is to reach out to the Blizzard Support team and they will assist you further.

That’s all for this guide. One of these methods will help you to fix error code 1 in Diablo 3. 

Here is our next guide – How to fix Diablo 3 error 395002.

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