How to Fix Git Merge Conflicts: A Complete Beginner's Guide (2026)

Git is one of the most widely used version control systems in software development, allowing developers to collaborate efficiently on the same project. However, when multiple people modify the same file or section of code, Git may not know which version should be kept. Instead of making an incorrect decision, Git pauses the merge and asks the developer to resolve the conflict manually. This situation is called a Git merge conflict.

Although merge conflicts can seem intimidating at first, they are a normal part of collaborative development. Understanding how they occur and how to resolve them will make you a more confident and productive developer.

What is a Git Merge Conflict?

A Git merge conflict occurs when Git cannot automatically combine changes from two branches because the same part of a file has been modified differently.

Imagine two developers editing the same function:

Developer A changes:

const theme = "light";

Developer B changes:

const theme = "dark";

When Git tries to merge these branches, it doesn't know which version is correct, so it creates a merge conflict instead of overwriting someone's work.

Why Do Merge Conflicts Happen?

Merge conflicts usually occur due to one of the following reasons:
Two developers edit the same line of code.
One developer deletes a file while another modifies it.
Code is merged after working on outdated branches.
Large feature branches remain unmerged for a long time.
Multiple developers update configuration files simultaneously.

Signs of a Merge Conflict

Git typically displays a message like:

CONFLICT (content): Merge conflict in app.js
Automatic merge failed; fix conflicts and then commit the result.

This indicates that manual intervention is required before the merge can continue.

Step 1: Check Which Files Have Conflicts

Run:

git status

Git lists all files containing conflicts.

Example:

both modified: src/App.js
both modified: package.json

Step 2: Open the Conflicted File

Inside the file, you'll see markers like:

<<<<<<< HEAD
console.log("Version A");
=======
console.log("Version B");
>>>>>>> feature-login

These markers show:

<<<<<<< HEAD → Current branch
======= → Separator
>>>>>>> feature-login → Incoming branch

Step 3: Resolve the Conflict

Decide whether to:
Keep the current version.
Keep the incoming version.
Combine both changes into a single solution.

Then remove all conflict markers before saving the file.

Step 4: Stage the Resolved File

git add src/App.js

Repeat for all resolved files.

Step 5: Complete the Merge

git commit

Git automatically creates a merge commit.

Resolving Merge Conflicts in VS Code

Visual Studio Code makes conflict resolution much easier.

When you open a conflicted file, you'll see options such as:
Accept Current Change
Accept Incoming Change
Accept Both Changes
Compare Changes

These built-in tools reduce the risk of accidental mistakes.

Resolving Merge Conflicts on GitHub

If a pull request has conflicts:
Open the Pull Request.
Click Resolve conflicts.
Edit the conflicting code.
Mark the conflict as resolved.
Commit the changes.
Merge the pull request.

How to Abort a Merge

If you decide not to continue the merge:

git merge --abort

This restores the repository to its previous state.

Best Practices to Avoid Merge Conflicts

Pull the latest changes before starting work.
Create short-lived feature branches.
Commit small, focused changes frequently.
Communicate with your team about shared files.
Review pull requests before merging.
Merge branches regularly instead of waiting weeks.

Common Beginner Mistakes

Editing conflict markers manually without understanding them.

Forgetting to run git add after resolving conflicts.

Deleting code accidentally while resolving conflicts.

Working on an outdated branch for too long.

Ignoring git pull before starting new work.

Frequently Asked Questions

Can Git resolve merge conflicts automatically?

No. Git cannot determine which conflicting changes are correct, so it requires manual resolution.

Is a merge conflict dangerous?

No. It's a safety feature that prevents accidental data loss.

Can I undo a merge conflict?

Yes. Run:

git merge --abort

before completing the merge.

Which tools help resolve merge conflicts?

Visual Studio Code
GitHub Desktop
GitKraken
Sourcetree
IntelliJ IDEA

Conclusion

Merge conflicts are a natural part of collaborative software development and shouldn't be viewed as errors. By understanding why they occur, learning how to read conflict markers, and following Git best practices, you can resolve conflicts quickly and keep your projects moving forward. Whether you're working alone or with a large development team, mastering Git merge conflicts is an essential skill that every developer should have.