Known issues

This section displays notes and limitations for working with LoadRunner Enterprise.

Additional known issues and workarounds are included in the relevant sections of the help center.

Installation and upgrade


When upgrading from previous versions (12.6x) to version 2020 or later, you need to replace your current license to work with the upgraded LoadRunner Enterprise installation. If you are using the Community license, it is automatically replaced during LoadRunner Enterprise installation. For any other license, contact support to obtain a valid, compatible license.

For more information, see Manage licenses.

Configuration Wizard error

When trying to run the LoadRunner Enterprise Configuration Wizard, it displays the error: “Failed to load object HP.Software.HPX.ConfigurationModel.Pages.PageInstaller. Would you like to continue with the configuration?"

Resolution: This is an indication that the Windows operating system is corrupted. We recommend performing a clean installation of the Windows operating system on the affected machine.


If Oracle is installed on the machine intended for the LoadRunner Enterprise Server, the IIS port will be in use by HTTPOra service. To use the machine as a LoadRunner Enterprise server, you must stop and disable the HTTPOra service, run IIS, and install the LoadRunner Enterprise server.

FIPS Compliant

LoadRunner Enterprise server and host components are not FIPS complaint and cannot operate on a FIPS enabled Windows machine. For details on how to work with LoadRunner Enterprise on a FIPS enabled Windows machine, see Software Self-solve knowledge base article KM01420828.

Security - CA certificate

You must update CA and TLS certificates if they were created with LoadRunner tools (Controller, MI Listener, Load Generators, Monitors Over Firewall) or if they do not contain the required extension information for the CA certificate being used. For details, see the Security - CA certificate section in the LoadRunner Known issues.

For LoadRunner Enterprise, in addition to these steps, you also need to update CA and TLS certificates for the LoadRunner Enterprise server which communicates with load generators for LAB-related operations. These certificates are located in the <LRE server installation folder>\dat\cert folder. See the above instructions for details on how to obtain the required certificates.

Missing dll If you encounter an error that the api-ms-win-crt-string-l1-1-0.dll is missing during the LoadRunner Enterprise Server installation or configuration process, you should restart the LoadRunner Enterprise server.

Back to top

Vuser scripts

Script file name

When uploading a script to LoadRunner Enterprise, the length of the script file name combined with the length of the LoadRunner Enterprise server installation path cannot exceed 100 characters.

Citrix ICA scripts
  • The Citrix Connection Center may prevent record and replay of Citrix ICA scripts if it is running in a different user session on the same machine.

    Resolution: Close all instances of the concenter.exe process for all users. To prevent the Citrix Connection Center from starting automatically, set the ConnectionCenter registry key to an empty value. This key can be found at:

    • For 32 bit systems: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

    • For 64 bit systems: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Wind ows\CurrentVersion\Run

HTML-based Vusers

HTML-based Vusers using Auto Proxy configuration may influence LoadRunner Enterprise host memory usage during a large performance test run.

Snapshot on Error

You cannot view the Snapshot on Error if a Vuser is running on a Linux load generator.

Compiled Vuser

When the Vuser script is a compiled Vuser, the Controller does not send the .dll to the remote machine.

Resolution: Using VuGen, add the .dll to the list of script files and upload the script to your project.

Java Vusers

Java Vusers are not supported over the firewall.

Running TruClient as a service

When running TruClient IE browser in Service Session using a non-interactive user, there may be issues with the browser cache and with HTML5 Local Storage (Local Storage enables Web applications to locally store data within the user's browser).

There are two possible workarounds available:

  • Workaround 1 (recommended for LoadRunner Professional and LoadRunner Enterprise users):

    You can run the browser with interactive user credentials, using one of the following solutions. Both of these solutions require a valid interactive user in the relevant domain, with permissions created by your administrator.

    • When working with LoadRunner Enterprise, the service mode issues are solved by configuring the credentials for the agent remotely, from the LoadRunner Enterprise UI. For details, see Reconfigure the LoadRunner Agent user.

    • On the load generator machine, edit the file “logon_user_config_file.cfg” located in the <LoadRunner installation directory>\launch_service\dat folder. Configure the logon type as LOGON32_LOGON_INTERACTIVE instead of LOGON32_LOGON_SERVICE, and restart the LoadRunner Agent Service.

    Workaround 2 (recommended for Application Performance Management users):

    Configure User Credentials for Services Session in the TruClient Supportability Tool. This affects only TruClient IE Vusers.

Back to top


Remote host installation

The remote host installation feature should be used for installing LoadRunner Enterprise certified installations only.

IP Wizard

Before running the IP Wizard to define multiple IPs on a host, make sure to first add the host.

Performing action on multiple resources

When performing an action on multiple resources (for example, checking hosts or assigning hosts to pools), you should limit the action to a maximum of 30 resources at one time.

Back to top

Cloud load generators

Cloud host template

When creating a new cloud host template, the default value of the Host Installation field is set to Windows Standalone LG (in LoadRunner Enterprise SP2) and OneLG in LoadRunner Enterprise SP3. If you are working with a Linux environment image, make sure to set the Host Installation field to Unix Load Generator.

Provisioning fails - invalid password

Provisioning fails, and the following error appears in the Site Administration log: The supplied password must be 8-123 characters long and meet password complexity requirements.

Resolution: Run provision again and select a password that meets the operating system passwords complexity requirements.

Amazon security group name contains spaces

Provisioning a load generator on Amazon EC2 Cloud, when the Amazon security group name contains spaces, results in the following error: "Invalid expression [<security group name>]. Message: literal ['xxx'] is illegal".

Resolution: Create a new security group in Amazon with no spaces.

Back to top

Online monitoring

Monitor profile

If you create a Load Test with a monitor profile and copy it to a different project, but choose not to copy linked entities, you cannot remove the monitor profile.

Time range displayed

To ensure the correct time range for running the performance test is displayed in the online graph, the time zone on the LoadRunner Enterprise Server and any external analysis database servers must all be synchronized.

Total Processor Time

If the Total Processor Time does not appear on the Host Monitor graph, this is due to a Microsoft limitation related to time synchronization between the client and server machines.

Load Generator Over Firewall machine

A Load Generator Over Firewall machine can act either as a Load Generator or as the source machine for the Network Delay monitor at a given time, but not both of them concurrently.

SAPGUI client

If you install a SAPGUI client that is logged in with a specific user, the SAPGUI may not work when logging in with a different user.

Resolution: Install the SAPGUI client with the IUSR_METRO or equivalent LoadRunner Enterprise user (LoadRunner Enterprise Identity).

Network Delay Time monitor
  • To change the default monitor settings of the Network Delay Time monitor, use ICMP instead of TCP.

  • The Network Delay Time monitor shows "No Data" in the online graphs when using Windows Server 2008 R2 SP1.

    Resolution: On the Windows 2008 R2 machine:

    1. Install all the latest updates.
    2. Add support for SHA-2 signing and verification functionality. For details, see
SiteScope monitor
  • You might experience a degradation in online graph performance when using SiteScope monitors with a large number of measurements.

    Resolution: If possible, use less measurements in SiteScope. If the SiteScope server is also used for purposes other than performance testing, try allocating another SiteScope server specifically for performance testing with less measurements configured in it.

  • When opening SiteScope from the Topology Designer window or the Performance Test Run window, most of the SiteScope options are disabled except for the options needed for configuring SiteScope monitors.

  • Topology integration is not supported in Community edition for the last supported SiteScope version. To enable the integration, you must upgrade your SiteScope license. For details on upgrading your license, see the SiteScope Deployment Guide available from the Software Documentation Portal at, or contact Micro Focus MySupport.

  • Starting at Google Chrome 45 ( and Mozilla Firefox 42 (, NPAPI plugins are no longer supported (technology required for Java applets).

Back to top

Performance test execution

Vusers log

To see the Vusers Log in an environment where the system user is non-administrative, grant the non-administrative system user full control of the following directory on the Controller machine: %windir%\system32.

URL Authorization

When the URL Authorization feature is installed and enabled as part of the IIS role, the LoadRunner Enterprise pages are not rendered correctly and some functionality issues, such as uploading a script and starting a performance test, can occur.

Back to top

Network Virtualization

NV installation and upgrades
  • Installation of the Network Virtualization for Linux package (NV4LG) is partly supported on Ubuntu 16.04 (the last kernel that was tested is 4.4.0-66-generic). It is not currently supported on Ubuntu 18.04, due to NV Driver installation failure.

  • Upgrading from Performance Center 12.6x to LoadRunner Enterprise 2020 (for LoadRunner Enterprise host only): If NV for Controller and NV for Load Generator co-exist on the machine and you select Custom mode installation, you are unable to modify Setup configuration settings.

    Resolution: Exit the wizard and uninstall the NV components. Then reinstall them by manually running the NV installation. See the installation section in the Network Virtualization for LoadRunner Help.

  • If you attempt to download Network Virtualization installation files from the Internet or an FTP site, the files will be blocked to protect the computer from untrusted files and you will get the following message:

    Resolution: Before installing NV, unblock the files as follows:

    1. Right-click one of the NV installation executable files located in <NV installation path>\Additional Components\Network Virtualization, and select Properties.

    2. If there is an Unblock check box in the General tab, select it and click OK.

    3. Verify that the Unblock check box is gone.

    4. Repeat for each executable file in the Network Virtualization folder.

Licensing Network Virtualization usage is included with the LoadRunner Enterprise installation; network emulation and NV Insights do not require any additional license purchase.

Back to top

Multi-tenant environments (SaaS)


The following are not supported in a multi-tenant environment:

  • Docker Swarm and Kubernetes

  • Dockerized load generators

  • InfluxDB

  • Remote Installations

Back to top



Internet Explorer 11 is a legacy browser that can be considerably slower than other modern browsers when using the LoadRunner Enterprise platform.


  • To avoid excessive memory usage when using LoadRunner Enterprise with an Internet Explorer browser, close the browser after logging out of LoadRunner Enterprise.
  • Migrate away from Internet Explorer 11 and utilize a more modern browser for LoadRunner Enterprise. For details on other supported browsers, see the System and protocol requirements.
Monitor Over Firewall Avoid using empty spaces in Lab location names since it can cause problems when using load generators over a firewall.
Offline results

There might be small discrepancies in the number of successful and unsuccessful transactions displayed in offline results (next to the bar chart), and the actual number that is displayed in Analysis and the HTML report. This is because the number in the offline results is based on data stored just before the test ended, and not the actual raw data stored on the load generator machines.

Result Collation

The maximum number of files that can be zipped for the collate or analysis process is limited by WinZip to 65,535. If you change the runtime logging settings to debug mode (Run-time Settings > General:Log > Extended log), it is likely, when running a performance test with a few hundred Vusers for more than an hour, that you will exceed this limit and WinZip will fail to create a zip file.

Usage reports

When a new user name is created using a previously deleted user name, the statistical data is combined and presented in the reports as data from one user name.

Resolution: Do not reuse previously deleted user names.

Scaling and zoom Changing the display settings, to reset the display scale and zoom, is not supported for any LoadRunner Enterprise or LoadRunner Professional components.
SMTP server Failure when sending a test email using SMTP with TLS or SSL encryption.

Back to top


IE 10 on Windows 10

When using an IE 10 browser on Windows 10 operating systems, help pages all open to the Help front page.

Resolution: Open the Help and search for the required information manually by using the search or contents fields, or use a different browser.

Help link gives 404

If a help link results in a 404 (page not found) error, try the following:

  • On the 404 page, click Home Page to access the home page for the latest help, then select the relevant version from the version dropdown list.

  • If the link was saved from a previous version, try replacing the version number in the URL with latest. For example, change:


Back to top

Internationalization limitations

  • To enable multi-language support, the DB and FS servers must support Unicode. In Oracle, multi-language support is defined when installing the server.

  • When working with an Oracle UTF-8 database, you can enter text in more than one non-English language.

Oracle 12.2 database

Special characters not shown correctly in CLOB columns after upgrading to Oracle 12.2. For details, see Software Self-solve knowledge base article.

Different characters in project

Opening and updating a project that contains characters different from those set in the ClientOSLocale or ClientOSAdvanceLocale may cause irreversible damage.


To display non-English characters, the OSLanguage needs to include the proper fonts for the language.

Component language must match
  • The InputLanguage inserted from an external component to LoadRunner Enterprise must be the same as the ClientOSLocale and ClientOSAdvanceLocale. For example, you cannot insert a UFT One script that contains Japanese characters in a client that runs on an OSLanguage with ClientOSLocale or ClientOSAdvanceLocale that is not Japanese.

  • The SiteAdminDBCollation and ProjectDBCollation must be set to the same language as the data insert. For example, inserting Japanese characters in a Korean collation is not supported.

Character limit in LoadRunner Enterprise edit box The number of double-byte characters you can enter in a LoadRunner Enterprise edit box may be more limited than the number of characters specified in the relevant error messages. The number of characters that can actually be used depends on the database definitions and the character set collation that is being used. For example, one character can occupy 3 bytes when using Japanese characters with a database that is defined to work with UTF-8.
LDAP authentication Non-English character sets are not supported when using LDAP authentication.
Project names

Non-English national characters are not supported in project names.

Resolution: Use English characters in project names.

Non-English Cyrillic URLs

Non-English Cyrillic URLs are not supported when creating noise scripts.

Resolution: Use English characters when creating noise script URLs.


The following characters are not supported in Microsoft SQL Japanese_CI_AS collation : U+30A0, U+30F7, U+30F8, U+30F9, U+30FA, U+30FB and U+30FF.

Resolution: Enable the Use Unicode option when using Microsoft SQL Server as a project database.

Back to top

Localization limitations

SSO authentication Multilingual user interface is not supported when logging in to LoadRunner Enterprise Administration using SSO authentication.
Localized user name Localized user names are not supported in LoadRunner Enterprise 2020.
Arial Unicode MS

When working with a localized version of LoadRunner Enterprise, you must install Arial Unicode MS - version 1.00 or later on your LoadRunner Enterprise server.

Exporting Trend reports to PDF

To support Unicode characters when exporting Trend reports to PDF, install Arial Unicode MS (ARIALUNI.TTF font) on the LoadRunner Enterprise Server.

System health

When running system health on a LoadRunner Enterprise machine, the SiteScope health check might fail when parsing the SiteScope version number. This problem occurs on localized machines that treat the decimal point as a comma.

Resolution: Ignore the error.

Back to top

See also: