Blink integration: hardware_id "Home Assistant" is rejected by OAuth v2 authorize endpoint, blocking all logins

[Pierre784]

The problem

The problem

The Blink integration fails to authenticate with the error "Invalid authentication"
for every user, immediately after entering username/password — before the 2FA step
is ever reached.

Root cause

HARDWARE_ID in homeassistant/components/blink/const.py is set to the literal
string "Home Assistant":

HARDWARE_ID = "Home Assistant"

The Blink OAuth v2 authorize endpoint (blinkpy/api.py, function
oauth_authorize_request) expects hardware_id to be a UUID, as documented in its
own docstring:

async def oauth_authorize_request(auth, hardware_id, code_challenge):
    """
    Step 1: Initial authorization request.

    Args:
        auth: Auth instance
        hardware_id: Device hardware ID (UUID)
        ...
    """

Sending a non-UUID string causes the authorize request to be rejected by Blink's
servers, and blinkpy swallows the real error, only logging a generic
"OAuth authorization request failed" with no HTTP status or body. This makes the
config flow immediately raise InvalidAuth, so the user always sees "Invalid
authentication" and never reaches the 2FA / PIN step.

What version of Home Assistant Core has the issue?

core-2026.7.2

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

No response

Link to integration documentation on our website

No response

Diagnostics information

Reproduction / diagnosis

Running blinkpy directly inside the HA Core container:

blink.auth = Auth(
    {"username": "...", "password": "...", "hardware_id": "Home Assistant"},
    no_prompt=True,
    session=session
)
await blink.start()
# -> ERROR blinkpy.auth: OAuth authorization request failed

Replacing hardware_id with a valid UUID with the exact same credentials:

blink.auth = Auth(
    {"username": "...", "password": "...", "hardware_id": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"},
    no_prompt=True,
    session=session
)
await blink.start()
# -> blinkpy.auth.BlinkTwoFARequiredError (expected — login succeeded, 2FA required)

This confirms the credentials and the OAuth v2 / 2FA handling code in both blinkpy
and config_flow.py are correct — the only issue is the non-UUID HARDWARE_ID
constant.

Suggested fix

Generate/store a stable UUID (e.g. via uuid.uuid4(), persisted once per install)
instead of the hardcoded string "Home Assistant" in
homeassistant/components/blink/const.py.

Environment

• Home Assistant Core: 2026.7.2
• Installation method: Home Assistant OS
• Supervisor: 2026.07.3
• Operating System: 18.1
• blinkpy version: 0.25.6
• Integration: Blink

Workaround currently in use

Manually patching const.py inside the container to use a UUID instead of
"Home Assistant":

sed -i 's/HARDWARE_ID = "Home Assistant"/HARDWARE_ID = "<some-uuid>"/' \
  /usr/src/homeassistant/homeassistant/components/blink/const.py

This works but is overwritten on every Core update that touches this file.

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

Suggested fix

Generate/store a stable UUID (e.g. via uuid.uuid4(), persisted once per install)
instead of the hardcoded string "Home Assistant" in
homeassistant/components/blink/const.py.

Environment

• Home Assistant Core: 2026.7.2
• Installation method: Home Assistant OS
• Supervisor: 2026.07.3
• Operating System: 18.1
• blinkpy version: 0.25.6
• Integration: Blink

Workaround currently in use

Manually patching const.py inside the container to use a UUID instead of
"Home Assistant":

sed -i 's/HARDWARE_ID = "Home Assistant"/HARDWARE_ID = "<some-uuid>"/' \
  /usr/src/homeassistant/homeassistant/components/blink/const.py

This works but is overwritten on every Core update that touches this file.

[home-assistant]

Hey there @fronzbot, mind taking a look at this issue as it has been labeled with an integration (blink) you are listed as a code owner for? Thanks!

Code owner commands

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• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component, problem in config, problem in device, feature-request) to the issue.
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---

@Pierre784 Thanks for reporting this issue!

Before we dive in, please make sure this isn't a duplicate by searching through existing issues. Also check recently closed issues, as your problem might already be fixed but not yet released.

https://github.com/home-assistant/core/issues?q=%20label%3A%22integration%3A%20blink%22%20
_{^{(message by IssueContext)}}

---

blink documentation
blink source
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[PierpaoloPernici]

Confirmed working on HAOS 2026.7.4. The sed workaround on const.py inside the container (via docker exec) resolves the OAuth authorization request failed error and lets the Blink integration authenticate successfully.

Thanks Pierre for tracking this down!

[tuxtux59]

Hi @Pierre784 ,
I would like to apply this correction on my HA instance.
What is HARDWARE_ID come from ? If i understand well "some-uuid" is at least a generated UUID v4.
But is HARDWARE_ID just a regex or needs to be replaced to be ran ?

[thasseler1-sudo]

Will there be a general HA update that fixes this issue, or does everyone have to install the fix themselves somehow?

[friimaind]

Thank you @Pierre784
I have a Home Assistant VM running under Unraid, in case it's useful here's the procedure I followed:

• generate a random UUID (for example: https://www.uuidgenerator.net/)
• Unraid web GUI > VMS > Homeassistant > VM Console VNC
• type login
• you should have a docker container called "homeassistant", type docker exec -ti homeassistant bash
• type vi /usr/src/homeassistant/homeassistant/components/blink/const.py
• enter edit mode (hit ESC and type i) and change HARDWARE_ID to HARDWARE_ID = "your-uuid-from-step-one"
• save (hit ESC and type :wq)
• type exit
• now restart the container, type docker restart homeassistant
• proceed with "Reconfigure" in HA under Settings > Devices & Services > Blink > Reconfigure

[elsurell]

Same issue here on HA Green. Waiting for an official fix instead of patching Core manually.

[Pierre784]

Hi @tuxtux59,

HARDWARE_ID is the hardcoded constant in
homeassistant/components/blink/const.py:

HARDWARE_ID = "Home Assistant"

It's not a regex, just a plain string used as the device identifier sent to
Blink's OAuth v2 authorize endpoint. The fix is to replace it with a fixed UUIDv4,
generated once and kept stable (don't regenerate it on every restart, or token
refresh may break).

You can generate one with:
python3 -c "import uuid; print(str(uuid.uuid4()).upper())"

Then patch it directly in your container:
sed -i 's/HARDWARE_ID = "Home Assistant"/HARDWARE_ID = ""/'
/usr/src/homeassistant/homeassistant/components/blink/const.py

Restart HA afterward. This is a workaround until it's fixed upstream in core.

[ironcat5150]

Thank you for the work around. It has worked perfectly for me. I had Gemini make me a UUID. It sounds like we will have to apply this fix every time a core update is installed. Will we also have to rebuild our Blink centric automations?

[Saverio90]

scusate a me non funziona qualcuno puo aiutarmi?

[friimaind]

scusate a me non funziona qualcuno puo aiutarmi?

Attendi il rilascio della patch ufficiale di HA

[Saverio90]

Non e mai uscito e mai uscirà....io non capisco perché nessuno può darmi una mano essendo che ha tutti funziona

[PierpaoloPernici]

#177615

[alexmil72]

Non e mai uscito e mai uscirà....io non capisco perché nessuno può darmi una mano essendo che ha tutti funziona

The Blink integration was genuinely broken for everyone due to an underlying issue.
The fix was just officially released in today's monthly patch. Update to the latest version, and it should finally start working for you!