How to fix remote: Repository is read-only. Please contact the repository administrator. in Git

First, verify that you have write access to the repository:

1. Go to the repository on Bitbucket (bitbucket.org)
2. Click Repository settings in the left sidebar
3. Navigate to User and group access
4. Find your username and check your permission level

Permission levels in Bitbucket:
- Read - Can clone and pull only (causes this error)
- Write - Can push to most branches
- Admin - Full access including settings

If you have only Read access, ask a repository administrator to grant you Write access.

# Verify which remote you're pushing to
git remote -v

# Confirm your Bitbucket username
git config user.name

Archived repositories are read-only by design. Check if this is the case:

1. Go to the repository page on Bitbucket
2. Look for an "Archived" badge or banner at the top
3. If archived, you'll see "This repository has been archived"

To unarchive a repository (requires admin access):
1. Go to Repository settings
2. Navigate to Repository details
3. Scroll to the bottom and click Unarchive repository
4. Confirm the action

If you don't have admin access, contact the repository owner to unarchive it.

Alternative: Fork the repository
If the repository should remain archived, you can fork it:

# Remove the old remote
git remote remove origin

# Add your forked repository as the new origin
git remote add origin git@bitbucket.org:YOUR_USERNAME/repo.git

# Push to your fork
git push -u origin main

Bitbucket workspaces have storage limits. If exceeded, repositories become read-only:

Check workspace storage:
1. Go to your workspace settings on Bitbucket
2. Click Plans and billing or Storage (depending on your plan)
3. Check the storage usage graph

Free tier limits:
- Bitbucket Free: 1 GB soft limit, 2 GB hard limit per workspace
- Over 1 GB: Warning notifications
- Over 2 GB: Repositories become read-only

Solutions:
1. Delete old branches:

# List merged branches
git branch -r --merged main

# Delete remote branches
git push origin --delete feature/old-branch

2. Clean up large files:

# Find large files in history
git rev-list --objects --all | git cat-file --batch-check='%(objecttype) %(objectname) %(objectsize) %(rest)' | awk '/^blob/ {print $3, $4}' | sort -rn | head -20

# Use BFG Repo-Cleaner to remove large files
# See: https://rtyley.github.io/bfg-repo-cleaner/

3. Upgrade your Bitbucket plan for more storage

Your Bitbucket account or workspace may be suspended:

Check account status:
1. Go to [bitbucket.org/account/settings](https://bitbucket.org/account/settings/)
2. Look for any warning banners or notifications
3. Check your email for messages from Bitbucket about account issues

Common suspension reasons:
- Billing issues (expired credit card, unpaid invoices)
- Terms of service violations
- Security concerns (compromised account)
- Inactivity on premium plans

To resolve:
1. Log in to your Atlassian account
2. Go to [my.atlassian.com](https://my.atlassian.com)
3. Check for any pending actions or payments
4. Update payment information if needed
5. Contact Atlassian Support if the issue persists

If your personal account is fine, check the workspace settings:
1. Go to the workspace
2. Navigate to Settings > Plans and billing
3. Resolve any billing or compliance issues

If you're using an app password or access token, it may lack write permissions:

For App Passwords:
1. Go to [bitbucket.org/account/settings/app-passwords](https://bitbucket.org/account/settings/app-passwords/)
2. Check your existing app password's permissions
3. Ensure Repositories: Write is enabled

Create a new app password with correct permissions:
1. Click Create app password
2. Give it a descriptive label
3. Select permissions:
- Repositories: Read, Write
- Pull requests: Read, Write (if needed)
4. Click Create
5. Copy the password immediately (it won't be shown again)

Update Git to use the new app password:

# For HTTPS URLs, update stored credentials
# On macOS:
git credential-osxkeychain erase
host=bitbucket.org
protocol=https
# Press Ctrl+D

# On Windows:
# Open Credential Manager and remove Bitbucket entries

# On Linux:
rm ~/.git-credentials
# Or edit and update the entry

Then push again and enter your username and new app password when prompted.

Bitbucket may have branch permissions blocking your push:

Check branch restrictions:
1. Go to Repository settings
2. Navigate to Branch restrictions (under Workflow)
3. Look for rules affecting your target branch

Common restrictions:
- Direct pushes blocked (must use pull requests)
- Only certain users can push to protected branches
- Force push disabled on main/master

Solutions:

Option 1: Push to a different branch

# Create and push to a feature branch instead
git checkout -b feature/my-changes
git push -u origin feature/my-changes

# Then create a pull request to merge into the protected branch

Option 2: Request push access
Contact a repository admin to add you to the list of users who can push to the protected branch.

Option 3: Modify branch restrictions (if admin)
1. Go to Branch restrictions
2. Edit the rule for the target branch
3. Add yourself or your team to the allowed users/groups

If HTTPS authentication is causing issues, try SSH:

Set up SSH key for Bitbucket:

# Generate a new SSH key (if needed)
ssh-keygen -t ed25519 -C "your_email@example.com"

# Start the SSH agent
eval "$(ssh-agent -s)"

# Add your key
ssh-add ~/.ssh/id_ed25519

# Copy your public key
cat ~/.ssh/id_ed25519.pub

Add the SSH key to Bitbucket:
1. Go to [bitbucket.org/account/settings/ssh-keys](https://bitbucket.org/account/settings/ssh-keys/)
2. Click Add key
3. Paste your public key
4. Give it a label and save

Update your remote URL to use SSH:

# Check current remote
git remote -v

# Change from HTTPS to SSH
git remote set-url origin git@bitbucket.org:workspace/repo.git

# Test the connection
ssh -T git@bitbucket.org

# Try pushing again
git push origin main

If none of the above solutions work, the repository may be locked at the server level:

Contact repository administrator:
The error message specifically says "Please contact the repository administrator." This means someone with admin access needs to investigate:

1. Identify who has admin access to the repository
2. Ask them to check:
- Repository archive status
- User permissions
- Workspace billing status
- Any recent maintenance or migration

Contact Atlassian Support:
If you're an administrator and still can't resolve it:

1. Go to [support.atlassian.com](https://support.atlassian.com)
2. Select Bitbucket Cloud
3. Describe the issue with:
- Repository URL
- Exact error message
- Steps you've already tried
- When the issue started

Check Bitbucket Status:
The issue might be on Bitbucket's end:
1. Visit [status.bitbucket.org](https://status.bitbucket.org)
2. Check for any ongoing incidents
3. Subscribe to updates if there's an outage