We can't open Skype. You are already signed in on this computer. Please sign out and try again.

[mindas22]

Hi, I am geting this problem:

We can't open Skype. You are already signed in on this computer. Please sign out and try again.

What I can do is delete skype folder in %appdata%

Then I can login, BUT next time I start skype i get same problem again.

Windows 8 -64bit.

Skype version 6.0.0.120 (same problem with 6.0.0.126)

Any solution for this?

[Tamim]

Try Below:

First Sync Your Clock With Internet Time Server.

Exit Skype : From the system tray >> right click on the skype icon and click "Quit"

Press WinKey + R to open the Run window

WinKey (the button is located between the left Ctrl and Alt with the Windows logo)

type: %programdata%\Skype\Apps and press Enter

Rename the folder login to login1.

Again Press WinKey + R

type: %appdata% and press Enter

Rename the folder Skype to Old_Skype

Try to uninstalling Skype with Revo Uninstaller

Download and Run Revo

revouninstaller.com/download-professional-version.php

Right Click on Skype and Select Uninstall

Windows Installer Launched >> Click Yes

Check  Advanced Button >> Click Scan

In Found Leftover Registry itms window >> Click Select All >> Then Click Delete >> Next

In Found Leftover files and folders window >> Click Select All >> Then Click Delete >> Next

Click Finish.

Now try reinstalling latest Skype with this link:
http://www.skype.com/go/getskype-full

You can make a backup by following the instructions below.

http://community.skype.com/t5/Windows/Transferring-message-files/m-p/944216/highlight/true#M69220

[mindas22]

Hi Tamim, I did exactly what You said. After restarting computer same problem.

[Tamim]

try Portable Skype

http://portableapps.com/apps/internet/skype_portable

[pargev]

What is Skype Portable and what's the difference between this one and the regular one from Skype.com?

[Tamim]

Please See.

http://community.skype.com/t5/General-Discussion/Any-disadvantages-to-portable-form-of-Skype/m-p/112...

[pargev]

Thanks for the link.

I am using skype for business and personal communications for already 6 years. It was always ok.

Recently I purchased Samsung series 9 with windows 8 on it. I have upgaded the skype, uninstalled all antiviruses and bloatware (only MS defender and firewall are installed), and updated to the latest version of skype (6.0.0.xx).

From the day 1 of using the skype on windwos 8 (win8, then upgraded to Windows 8 Pro) I am getting the issues described in this thread.

Particularily: 

1. Skype (for Desktop) opens properly and I sign in ok.

2. Then during the day I am required to switch the network between wifi, 3G or LAN and sometimes (1-3 times a day) skype appears to be online for me but I don't receive any message from others. My messages are not sent as well (the loading icon keeps spinning near my messages). It may take hours until I realize the reasons for suspicious silence. 

3. As a solution I try to relogin to skype however if I sign out and try to login skype hangs.

4. After I force close the skype application and restart it, I receive the message "We can't open Skype. You are already signed in on this computer. Please sign out and try again." upon login attempt.

5. If I quit skype I can see skype.exe process in the task manager still running and I cannot kill/end it. The "Access Denied" message appears.

The only solution is to restart Windows 8, which is not an option in the long run.

I shall note that no one else in the office (running windows 7) have this issue.

Do you have a definite solution to this issue or do you know if there is a patch or an update planned by Skype or MS teams to fix this issue?

Please help, otherwise I shall downgrade to Windows 7 or get rid of Skype. Both options will be harmful to me. 

Thanks a lot!

[Tamim · Accepted solution]

Please try disabling uPnP

In Skype, Tools >> Options >> Advanced >> Advanced Settings >> Connection >> uncheck the enable uPnP and click Save.

[lucas14]

Having the same issue? Is this problem have a solution?

[mindas22]

Problem soved. Disable uPnP solved the problem!