Updated April 2025: Stop these error messages and fix common problems with this tool. Get it now at this link
Skype for Business is part of the Office 365 suite. Skype for Business provides cost-effective tools for business collaboration. However, when you try to sign in to Skype for Business, you may encounter the “The address you typed is not valid” error.
If you’re trying to sign in to Skype for Business and you’re getting a “The address you typed is not valid” error, this guide is for you.
Table of Contents:
What causes the “The address you typed is not valid” error on Skype?
This problem is mainly reported by people who use Skype for business. There have been complaints about this problem because email addresses were not recognized and the Skype client could not connect. The main reason for this issue was that the users were not on the appropriate DNS server for their organization.
The problem could be caused by an error when saving data or installing the application. The data is then corrupted and causes problems in operation. Cached data can often be corrupted and even after uninstalling the application, the data remains. This causes problems even when the application is reinstalled.
It has been reported that this error occurs after a Windows update. However, the main cause of this error is still related to DNS addresses. You can start with the first solutions and then move down.
How to repair the Skype “The address you typed is not valid” error?
This tool is highly recommended to help you fix your error. Plus, this tool offers protection against file loss, malware, and hardware failures, and optimizes your device for maximum performance. If you already have a problem with your computer, this software can help you fix it and prevent other problems from recurring:
Updated: April 2025
Check for pending Windows updates
Microsoft previously released an update for similar issues to fix the Skype for Business bug. Check if Microsoft has released a fix for the application to fix this particular issue.
- Click on Start and select Settings.
- Go to Updates and security.
- Click on Windows Updates.
- You should see any pending updates. If none are found, click Check for updates now.
- Download and install the pending updates.
- Check for enhancements.
Reinstalling Skype for Business
If the problem persists, you can try reinstalling the app to fix the problem. This should fix any damage to the application.
- Press the Windows + R keys to open Run.
- Type appwiz.cpl and click OK.
- Select Skype for Business and click Uninstall.
- Restart your computer after uninstalling it.
- Download Skype for Business again from the official website and install it.
Clear the registry entry
- Press the Windows + R keys to open Run.
- Type Regedit and click OK to open the registry editor.
- In the registry editor, navigate to the following location:
HKCUSoftwareMicrosoftOffice15.0Lync - Delete the following key:
[email protected] - Close the registry editor and check if the error has been fixed.
Deleting the Lync cache
If the problem persists, clearing the Lync cache folder can help resolve the error.
- Open File Explorer and go to the following location:
%userprofile%[email protected] - Delete the local user folder.
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Frequently Asked Questions
I cannot connect to Skype for Business. The domain username or password seems to be incorrect?
To check your computer's clock settings, open "Date and time" in Control Panel. Cannot log in to Lync The user name, password, or domain appears to be incorrect. Make sure you entered it correctly. If the date and time are correct, contact your network administrator to verify that your digital certificate file is valid.
What should I do if Skype for Business is not working?
- Make sure that your device has a working internet connection with the right bandwidth.
- Make sure that you have the latest version of Skype installed.
- Check your security software or firewall settings to make sure they are not blocking Skype.
Why can’t I sign in to Skype for Business?
On the Skype for Business login screen, click Clear my credentials. Note: If you are blocked at the Contact server and sign in page, click Cancel sign in. In the window that appears, click Yes. Click Sign in.
How do I fix my Skype problem?
- Check Skype's status page. This page lets you know if any problems have been reported.
- Make sure you have the lowest system requirements and are using the latest version of Skype.
- Check your computer and your internet connection.