Hi Jorja Parker,
Thank you for reaching out to Microsoft Q&A forum. I understand how frustrating this must be, especially when an important app like Xero won’t let you sign in because the system time isn’t quite right. Even a small time difference can cause this, since many accounting and security‑based apps rely on your computer’s clock being perfectly in sync.
I can see that Q&A Assist has already suggested a few steps. I’ll add more detail to those below and include an additional step that may help:
Step 1: Confirm automatic time settings
Please go to Settings > Time & Language > Date & time and make sure both Set time automatically and Set time zone automatically are turned on. Also double‑check that the time zone shown matches your location.
Step 2: Force a time resync
On the same page, scroll down and select Sync now. This forces Windows to refresh the time directly from the internet time server, which often clears small offsets like the 10‑minute difference you’re seeing.
Step 3: Sync using Internet Time
If the time still doesn’t correct itself, press Windows + R, type timedate.cpl, and press Enter. Open the Internet Time tab, select Change settings, make sure Synchronize with an Internet time server is checked, then click Update now and save the changes.
After that, please restart the PC and try opening Xero again.
Please let me know how it goes. I’m happy to help further if needed.
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