Kb2566790 skype for business как исправить

KB2566790 business error in Skype is registered by many users and asked for a possible solution on the internet. Many Skype for business users faced this, and it is a common issue. In this case, they saw an error code KB2566790. Here the user gets an error message ‘Skype for Business‘ could not find a Skype for Business Server ‘domain.in’. Any kind of fault with the Domain Name System(DNS) configuration for your domain can cause problems. For error message KB2566790, you need to contact your system admin.

Causes of KB2566790 business error

The main reason for this KB2566790 error is missing Skype or Lync DNS records for the respective domain. As long as the error is not fixed, you will see the error message. As a result, the problem needs to be fixed.

There are many ways to fix this issue. Those are as follows:

By uninstalling or deactivating the VPN or antivirus for a while

The easiest way to fix this KB2566790 issue is to disable the antivirus and the VPN. The VPNs and the antiviruses might create some problems for Skype for Business due to data encryption. As a result, the user will face trouble while logging in. By disabling VPNs and antiviruses, many users got positive results while logging in.

By properly checking your connection

Skype for Business might show some errors due to a fault in your internet connection. If your internet connection is not stable over time or does not have sufficient bandwidth, it can cause a lot of trouble. This is required for a smooth operation. Now, in this condition, if you try to log in, there will be some error in Skype for Business. Testing your connection with a remote connectivity test to access skype will help. There are some other ways by which the connection of skype can be improved. Those are as follows:

• Take a change of your wireless connection and use a wired connection instead. 
• By disconnecting any other connected device with your network will help to improve the connection.
• You must have to disable any app running in the background of the video streaming app.

By clearing the cache of your system

By clearing the cache of your system can help you in getting out of the KB2566790 error. The steps to do this are as follows:

• First, you need to close Skype for Business. Now, you have to open the command window by pressing the Windows key along with ‘R.’
• Now you have to type in the command window as follows: ‘ %localappdata%MicrosoftOffice16.0Lync ’.
• After that, you have to delete those files that are named as ‘sip_’ at the beginning.
• Now, you have to identify the tracing file and then open it.
• Then, you must delete all the files inside of the tracing file. However, you must keep the main file as it is.
• Now you have to launch the command prompt as administrator and then run ipconfig /flushdns command in it. 
• After that, you need to restart your PC and start logging into Skype for Business.

By repairing the Office 365 on your PC

Another easy and hassle-free step to fix the KB2566790 error is to repair Office 365 in your system. To do this properly, you need to follow the below-mentioned steps.

• First of all, you have to open the control panel in your system.
• Now you have to go to ‘Programs,’ and then you have to choose the ‘Programs and Features’ option.
• Then you have to click on the Office 365 option.
• Here you find the Change option. You have to click on it. Then it would help if you opted for the ‘Quick Repair’ option. The problem should end here. If the problem is still there in the system, you should click on the ‘Online Repair’ option.
• After completing those steps, you need to restart your PC and check it.

By correctly adding the DNS for the Domain:

By making the correct entries of the DNS can fix this issue. By properly maintaining the entries of the services(SRV) and alias(CNAME) to your DNS host could solve the issue.

By changing the setting in Skype

According to some users, after some changes made in the skype setting, it is working fine. The steps are given below.

• It would help if you went to the tools options. After that, you have to select the Advanced Connection Settings.
• Here, you must check the Manual Configuration closely.
• You have to enter the same as “sipdir.online.lync.com:443” for the internal servers only.
• However, for the external server name, you have to enter “sipdir.online.lync.com:443” properly.
• After that, you have to click Ok to proceed with the login.

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Conclusion

The error message KB2566790 might seem too complicated to someone. The solution is not that complicated. It is clear that the problem is with the DNS configuration. You can either follow any of those above-mentioned steps or contact your administrator and ask for help.

Are you a business person who uses Skype for Business on a daily basis? However, for some reason, you can not find a server in Skype for Business. This issue really makes you frustrated as you need to use skype for Business purposes.

I can feel how miserable that feeling is! I have faced this issue couple of times. I did in-depth research on it and found the best solution for this specific problem.

Read the full article and follow the fix I am about to share to solve this problem.

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Why does Skype for Business not Find a Server?

Skype for Business fails to find a server for reasons like dense network traffic and limited or no availability to your area. Another common reason for this issue is missing Skype or Lync DNS records.

As you may have already known that Skype for Business is a handy tool for Business-oriented people who wants to connect via remotely. It is a premium feature that comes with Office 365.  However, users often face the issue of finding servers on Skype for Business.

The issue comes with an error message like, “ Skype for Business couldn’t find a Skype for Business Server for account.com. There might be an issue with the Domain Name System (DNS) configuration for your domain. See KB2566790 for details and contact your system admin.”

Error KB2566790 appears when your Skype for Business account can not find a Skype for Business Server. The main reason for this error is missing Skype or Lync DNS records for the respective domain. Error KB2566790 will pop up until you fix this issue.

Error KB2566790 is a common issue among Skype Business users. This problem can cause by any kind of error in the Domain Name System or DNS configuration for the respective domain.

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For a business person like you, not finding a business server on Skype is quite frustrating. Don’t worry; I have the quickest fix for you. By applying those fixes, you can quickly solve your problem.

Here are the fixes for Skype for Business couldn’t find a server:

1.   Add DNS Records for the Domain

Missing Skype or Lync DNS records are the most common reason for this server error. First of all, make sure whether the service (SRV) and alias (CNAME) records are available on your DNS or not. If not, then try adding the value I am about to provide you in a second.

SRV records are given below:

First Batch

• Type: SRV
• Service: _sip_
• Protocol: tls
• Port: 443
• Weight: 1
• Priority: 100
• TTL: 1 hour
• Name: <DomainName>
• Target:online.lync.com

Second Batch

• Type: SRV
• Service: _sipfederationtls_
• Protocol: tcp
• Port: 5061
• Weight: 1
• Priority: 100
• TTL: 1 hour
• Name: <DomainName>
• Target:online.lync.com

CNAME records are given below:

First Batch

• Type: CNAME
• Host Name:<DomainName>
• Destination:online.lync.com
• TTL: 1 hour

Second Batch

• Type: CNAME
• Host Name:<DomainName>
• Destination:online.lync.com
• TTL: 1 hour

Now, give the domain some time to take the full impact of the changes and adjust the changes all over the network.

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2.   Uninstall or Deactive the Antivirus and VPN for a Moment

Antivirus applications and VPNs are often the reason behind the “Skype for Business couldn’t find a server” problem. You can simply disable or uninstall these applications to eliminate this issue.

Here is how you can temporarily disable the antivirus(default Windows Defender):

• Press Windows + s key to open the windows search feature.
• Type Windows Security Settings and open the service.

• Click Virus & threat protection.

• Scroll down and click Manage settings under the section Virus & threat protection settings.

• Turn off Real-time protection, Cloud-delivered protection, Automatic sample submission, and Tamper Protection.

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3.   Check Your Internet Connection

An unstable internet connection can ruin your day. Whatever you try to do will end up in frustration. Unstable internet connection often causes this “Skype for Business can not find server” problem. Test your connection to check whether the internet connection is the reason behind this problem or not.

There are some popular network speed testing websites out there, such as Ookla, Fast(.)com, Speedtest sg, etc. Use any of them to check your internet connection stability.

If the connection is okay, then use the Remote Connectivity Test to access the remote connectivity of your Skype for Business Server.

If your connection is slow, try using a better bandwidth and a faster connection. However, I have some quick tips to improve your internet connection. These tips will not cost any money.

Here is how you can improve your existing internet connection:

• Use ethernet cable instead of wireless connection. Ethernet connection can provide much better bandwidth coverage compared to Wifi.
• Limit the connecting devices from your workplace connection because internet connection quality decreases if a significant number of devices are connected.
• Disable any background applications that consume internet bandwidth. Those background applications can significantly decrease the network speed. So disabling those apps can boost your network speed.

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4.   Clear the System Cache

Your system can behave abnormally when a significant amount of system cache is stored. Clearing the system cache can help you solve the “Skype for Business couldn’t find a server” issue.

Here is how you can clear the system cache from your computer:

• Close Skype for Business and all the services related to Skype.
• Press Windows + s to open the windows search feature.
• Type Disk Cleanup and open the application.

• Select the drive you want to clean (default is set to drive c, no need to change) and click OK.

• Click Clean up system files and select the drive C again.

• Select or checkmark all the files you want to delete and click OK.

• Select Delete Files from the prompt window.

5.   Repair the Office 365

You can quickly fix this issue without any hassle by repairing Office 365. There are some easy steps to repair the application. You can simply repair Office 365 within a minute.

Here is how you can repair the Office 365:

• Go to the Control panel.
• Navigate to the Programs and Features.
• Right Click on the Office 365
• Select the Change option to begin the repair process.
• Click Online Repair if the problem remains in the system.
• Restart the computer to check whether the problem is solved or not.

6.   Change Skype Settings

By changing the Skype setting, you can quickly fix the problem. It will work just fine after changing some settings.

Here is how you can change the settings in Skype:

• Open the Skype app and go to the tools
• Select Advanced Connection Settings.
• Check Manual Configuration.
• Enter online.lync.com:443 for the internal servers only.
• Enter online.lync.com:443 for the external servers or Edge servers.

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Final Words

Skype for Business users cannot find the server is a pretty frustrating issue. Try changing the DNS settings and Skype settings. These seem to be effective. If the problem continues, try other methods to get rid of this problem.

Hopefully, you get all the information and troubleshooting methods from this article. Carefully follow these methods and fix the “Skype for Business coudn’t find a server” problem.

Thanks for reading this article. Let me know if you have any more queries. I’ll try my best to solve those issues.