Last modified by Martin Výlet on 03.08.2023 13:57

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1 If VPN concentrator after connection does not require login and password, please check your connection to VPN concentrator by using command:
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3 * From internet: **ping vpn.vsb.cz**
4 \\(Enter ping command similary like [[here>>doc:tuonet.sit-nastaveni.ping.WebHome]].)
5 If server do not respond there is very likely problem with your network connection. (% style="color:#cc0000" %)Ask your provider for help(%%).
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8 VPN concentrators have no capacity limits.
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11 If login and password is requied again and again, you are probably entering bad login or password. You may check if your password is not blocked [[here>>url:https://innet.vsb.cz/cs/uzivatelsky-ucet/potrebuji-poradit/problemy-s-prihlasenim/]].
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14 Also check if your access was not blocked due sharing (check your academic email).
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17 Often there are problems with firewall settings or antivirus malfunction. Try deactivate them temporarily and connect again.
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20 If you are connected to internet via SOHO router, problem might be there. Try to update firmware to the lastest version. We also register this problem at some TP-Link routers.
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23 If you have a problem connecting through the AnyConnect client, make sure that you do not have activated a proxy server (Various anonymization services, etc.).
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26 When you are installing the AnyConnect client and you will get the error message "**Web-based installation was unsuccessful**", perform the installation manually by clicking "**Install using the link below**".
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29 When installing the AnyConnect client, an error occurs "** The VPN client agent was unable to create the interprocess communication depot **", it is necessary to disable the service in the Windows Internet Connection Sharing / Internet Connection Sharing (for example [[https:~~/~~/its.uiowa.edu/support/article/3723>>url:https://its.uiowa.edu/support/article/3723]])
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31 If you use Chrome / Chromium may appear instead of the page content vpn.vsb.cz following error: ** Error 324 (net :: ERR_EMPTY_RESPONSE): Unknown error **. The solution is to run the program with the following argument: ** - -disable-ssl-false-start **. Argument can add the shortcut properties (icon Chrome / Chromium) in the Target box: .. ** chrome.exe-- --disable-ssl-false-start **. More technical information can be found, for example,
32 [[here>>url:https://tools.ietf.org/html/draft-bmoeller-tls-falsestart-00#page-3]].
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35 __**Only for Cisco VPN client:**__
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37 When logging will be correctly, but have problems when transferring data, set with utility setmtu ** ** MTU 1300 B. Program in the directory with a VPN client "Program Files / Cisco Systems / VPN Client".
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40 if your Internet service provider uses address translation, you must have setup a VPN client checked item ** ** Enable Transparent Tunneling. Check this tab ** ** Transport. You can use IPSec over UDP (preferred) and IPSec over TCP.
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43 When using the Cisco VPN client is needed to the Windows (% style="color:rgb (204, 0, 0)" %) was not (%%) installed ** Transport Protocol compatible with NWLink IPX / SPX **. Uninstall it in the Control Panel ** ** Network Connections.
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45 Occurs when you install the client on Windows Vista or Windows 7 ** error Internal Error 2738 or 1720 **, follow these steps. Use this procedure even in the case when installed on Windows 7 64 bit error occurs ** Installation ended prematurely Because of an error **.
46 __Only for Windows 7: __
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48 1. First you need to delete a registry key (there may be even twice):
49 ##HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{B54F3741-5B07-11CF-A4B0-00AA004A55E8}##
50 On Windows 7 64bit it is the key:
51 ##HKEY_CURRENT_USER\Software\Classes\Wow6432Node\CLSID\{B54F3741-5B07-11CF-A4B0-00AA004A55E8}##
52 More information http://blogs.msdn.com/astebner/archive/2007/06/07/3151752.aspx
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54 __For Windows 7 and Vista:__
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56 1. Make sure that you are not running the installer Cisco VPN client.
57 1. Click on Start → All Programs → Accessories
58 1. Right-click on Command Prompt. Select Run As ... menu, then select Run As Administrator.
59 1. In the command prompt write cd C:\Windows\System32 and press enter.
60 1. Then enter regsvr32 C: \ Windows \ System32 \ vbscript.dll ** and press Enter.**
61 1. You'll see a message that says "DllRegisterServer in C: \ Windows \ System32 \ vbscript.dll succeeded." Then click OK.
62 1. Close the Command Prompt and restart the computer.
63 1. By now, the installation was done correctly.