# Sign-in problems

Sign-in runs through your email address — via 6-digit code, password or Google/Microsoft ([all methods explained](https://docs.kalender-sync.de/en/getting-started/create-account/)). Here are the most common snags.

## "The code email doesn't arrive"

- Check the **spam/junk folder** — especially the first time, the email likes to land there.
- **1–2 minutes of patience**: some company mailboxes (security gateways, quarantine) deliver with a delay.
- **Typo** in the email address? Just request a new one.
- Persistently nothing arriving: test with a personal address — if it works there, your company mail server is the issue (ask IT or [contact support](https://docs.kalender-sync.de/en/troubleshooting/contact-support/)).

## "Code invalid" or "code expired"

- Codes are valid for **15 minutes** — after that, simply request a new one.
- Received several emails? Only the code from the **most recent** counts.
- After **5 wrong attempts** the code is invalidated ("Too many attempts") — again: request a new code, and wait briefly if requesting itself is throttled.

## "Forgot password"

Choose **"Forgot password?"** on the login page — you reset it via email code. Or simply sign in **"with a code"** right away, no password needed.

## "Sign in with Google/Microsoft doesn't work"

- Same email address as at registration? Only then do the sign-in methods lead to the same account.
- Error inside the provider sign-in (org policy)? Use the email-code login instead — that always works.

## "I can't access my mailbox anymore"

Without access to your email address we can't verify you automatically — [contact support](https://docs.kalender-sync.de/en/troubleshooting/contact-support/) and we'll find a way together.