You're at the end of your formality on the INPI Guichet Unique, you click "Sign with FranceConnect+", and... nothing. Blank page, orange banner, infinite loop. FranceConnect+ doesn't work on INPI and your file stays pending. It's one of the most frequent bugs reported by entrepreneurs since the mandatory move to the Guichet Unique in 2023.

It's not you, it's the service. And it's not anecdotal: at every usage peak (fiscal closings, end of month), FranceConnect+ saturates and prevents the PDF summary signature. Here's what really happens, and most importantly, how to bypass it when urgency leaves no choice.

Why FranceConnect+ doesn't work on the Guichet Unique

FranceConnect+ is the substantial-level digital identity required by INPI to sign the end-of-formality summary. Concretely, it's the La Poste Digital Identity app that does the authentication work, then applies an electronic signature recognised by the Guichet Unique.

Several links can break:

The result is always the same: the summary is never signed, your formality stays "awaiting signature" and the legal deadline keeps ticking.

The most frequent symptoms

Blank page after clicking "Sign"

The best-known bug. You click the signature button, the browser loads, then displays a blank INPI page with no error message. No feedback, no trace. The session is lost and you have to start over.

Orange "service unavailable" banner

The Guichet Unique sometimes shows an orange banner at the top: "Signature service temporarily unavailable." Can last a few minutes... or several hours, with no official communication.

Infinite reload loop

You're redirected to FranceConnect+, then sent back to the Guichet Unique, then redirected again to FranceConnect+... the loop never breaks. This often happens when your La Poste digital identity isn't at the right level of assurance.

Error "Your digital identity has been rejected"

The service replies that your identity doesn't allow signing, while it works for taxes or health insurance. Typical: those services require "substantial non+" level, INPI requires "+ qualified".

To remember The INPI Guichet Unique requires an eIDAS qualified electronic signature. Without it, your formality cannot be validated. FranceConnect+ is ONE option among others, not the only one.

What does the law say? Qualified signature is not mandatory via FranceConnect+

Many users think FranceConnect+ is mandatory. That's false. INPI requires an eIDAS qualified electronic signature under EU Regulation 910/2014. FranceConnect+ is a way to obtain this signature, but not the only one.

Any Qualified Trust Service Provider listed on the EU Trust List can produce an equivalent signature. That's our case: we're backed by a qualified TSP that applies the same signature, with the same legal value, in 2 minutes.

The result on the summary is strictly identical in the eyes of the INPI Guichet Unique. The PDF signed with us is accepted 100%.

Solutions when FranceConnect+ doesn't work on INPI

Solution 1: wait and retry (long and uncertain)

If you're not in a hurry, you can wait for the service to come back. Clear cache, restart browser, retry at off-peak hours (early morning or late evening). It works... sometimes. But it's a gamble.

Solution 2: redo La Poste digital identity (several days)

If your assurance level is insufficient, you can redo the La Poste procedure with a physical post office verification. Expect 2 to 5 working days and a physical appointment. Not ideal when your formality is urgent.

Solution 3: use a qualified eIDAS provider (2 minutes)

The solution most of our customers choose. You download your PDF summary from the Guichet Unique, drop it on our service, pay €29 ex. VAT, receive the qualified-signed PDF in 2 minutes. Upload it back to the Guichet Unique. Formality validated.

FranceConnect+ blocking you? Sign in 2 minutes.

eIDAS qualified electronic signature on your INPI summary, 100% acceptance rate.

Sign my summary →

How does it work concretely?

The procedure is deliberately simple, because you're already tired of FranceConnect+ bugs:

  1. Download your summary from the Guichet Unique (the PDF usually called "synthese.pdf" or "Recapitulatif_formalite.pdf")
  2. Upload it to our signature page
  3. Fill in your details (last name, first name, email, phone) — used to identify the eIDAS signer
  4. Pay €29 ex. VAT by card (Stripe, secure)
  5. Validate your identity via OTP sent to your phone
  6. Retrieve your signed PDF and re-upload it to the INPI Guichet Unique

The whole operation takes 2 minutes on average. No post office, no video, no infinite loop.

FAQ: FranceConnect+ INPI not working

Is the PDF signed with you accepted by INPI?

Yes, at 100%. Our signature is compliant with EU eIDAS Regulation 910/2014, qualified level, produced by a provider listed on the European Trust List. That's exactly what the Guichet Unique requires. See our Trustpilot reviews.

And if my summary is already rejected?

If the summary is rejected by the Guichet Unique, you can re-download it, re-sign with us and re-upload. No INPI-side block.

How long does signing take?

2 minutes on average. The signed PDF arrives in your mailbox and stays downloadable on the confirmation page.

Does this definitively replace FranceConnect+?

For this formality, yes. For your future formalities, you can retry FranceConnect+ or come back to us. Many customers come back for convenience, because it works the first time.

Conclusion: don't waste your day on FranceConnect+

When FranceConnect+ doesn't work on INPI, the worst is to keep trying. Each failed attempt costs you 30 minutes and adds frustration. The eIDAS qualified signature via a provider listed on the EU Trust List is the only legally equivalent alternative, and it takes 2 minutes.

You have a blocked articles amendment, an annual accounts filing, a business cessation or a company formation? Get your summary, sign it with us, it's validated.

Official sources