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Login Problems

Can't get past the login screen, or suddenly got logged out? Here are the most common reasons and how to fix them.

PrimeCal is accessed at app.primecal.eu.

"Session expired. Please sign in again."​

This appears when your login session has timed out after a period of inactivity.

Fix: Click Sign in, enter your email and password, and you'll be back in immediately.

If it keeps happening every few minutes (not after a long break), try clearing your browser's localStorage for app.primecal.eu. In Chrome: Settings → Privacy → Clear browsing data → Cached images and files.

"Invalid credentials" — but you know your password is correct​

Most likely cause: A typo, especially if a password manager is filling in the wrong saved entry.

Fix:

  1. Try typing your password manually rather than using auto-fill
  2. Use the Forgot password link on the login page to reset via email
  3. Check your spam folder if the reset email doesn't arrive within a few minutes

Sign In button does nothing when clicked​

Most likely cause: Your browser is blocking the request, or there's a network issue.

Fix:

  1. Refresh the page and try again
  2. Try a different browser (Chrome, Firefox, or Edge)
  3. Disable any browser extensions that might block requests (especially ad blockers or script blockers)
  4. Try an incognito/private window

If the issue persists across browsers, the service may be briefly unavailable — check again in a few minutes.

Google or Microsoft login returns an error​

See OAuth Issues for the full troubleshooting guide for Google and Microsoft sign-in errors.

Quick checks:

  • Make sure you're selecting the correct Google or Microsoft account if you have multiple
  • Try signing out of all Google/Microsoft accounts and sign in fresh
  • Try in an incognito window to rule out cached state

Signed in but immediately sent back to the login page​

Most likely cause: Your browser is blocking or clearing the session token.

Fix:

  1. Try in a private/incognito window with all extensions disabled
  2. Make sure cookies and localStorage are enabled for app.primecal.eu in your browser settings
  3. If you're on a managed/work device, your organization's browser policy may be clearing session storage

Account locked or can't receive reset email​

  • Check that the email address you're using matches your PrimeCal account — the reset link goes to the email on file
  • Check your spam folder for the reset email
  • If you've lost access to the email account associated with your PrimeCal account, contact support

Still stuck?​

Contact support with:

  • What you see when you try to sign in (screenshot or error message)
  • The browser and OS you're using
  • Whether the problem is happening on all devices or just one