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For many issues that you experience within Unreal Game Sync, at that place is a tooltip that gives you more data on what's going incorrect with an option y'all believe should be working correctly.

Basic Troubleshooting

When you lot need to ask a question to either Epic or your IT section about Unreal Game Sync, yous should include bones data about your setup. This will assist get you meliorate, more efficient assist. Some examples include:

• Establish if y'all tin reproduce the issue without using UGS. Often, issues that announced to be UGS-related, are not. For example:

  • If in that location'southward a crash, attempt opening the editor without using UGS.
    

  • If in that location's a Perforce sync issue, endeavour using only Perforce instead of using it through UGS.

• If yous still see the issue without UGS involved, y'all'll need to contact the team or department responsible for where the result is really occurring to get ameliorate assistance.

  • Institute if yous are on the latest version of UGS. Version information tin can be accessed through either the Diagnostics menu (Principal page > Options > Diagnostics... ), or it can be constitute in C:\Users\AppData\Local\UnrealGameSync\ in UnrealGameSync.log. This can frequently exist the cause of issues involving metadata and updates to UGS.

  • If yous've determined that this is a UGS-specific issue, please refer to the mutual issues below outset.

Troubleshooting Compile Errors

A big number of compile errors can be solved with uncomplicated troubleshooting steps:

• Ostend which step in the Compile failed. For instance, UnrealHeaderTool, ShaderCompileWorker, and so on.

• Clean your Workspace through UnrealGameSync, by selecting More than... > Clean Workspace in the Project Overview area. Afterwards that, attempt to sync or compile over again.

• Delete UE4.sln, then manually run GenerateProjectFiles.bat (Windows), or GenerateProjectFiles.control (Mac), and effort to sync or compile again.

• Try to manually compile using Visual Studio or XCode.

• Endeavor to sync or compile a Changelist marked as Good (indicated with a greenish circumvolve)

  • If failure continues, select Options > Utilize Incremental Builds = Fake

  • Attempt to recompile

• Ensure Sync Precompiled Editor is disabled

  Only bachelor in sure streams.

• Ostend the workspace in Perforce has been configured properly.

  This can exist helpful in a lot of situations, just it doesn't cover if there are extra files within your workspace. If your workspace gets likewise complex to manage, yous may need to contact your Information technology department for help, or remake your workspace and re-sync the data for it.

Specific Problems

Can't detect Precompiled Binaries.

• Detecting PCBs can accept a long fourth dimension. UGS will offset load all the CLs, then cross-reference them to see what PCBs are available. On a slower connection, this tin take minutes, then be patient.
  

• If the problem persists, this is probable a result of permissions issues with the stream where they're stored, or they aren't getting created/uploaded correctly due to a build health issue. Contact your Perforce administrator and confirm your builds are successfully uploading the precompiled binaries, and that yous have access.

• The tooltip shown when hovering over Sync Precompiled Binaries will also give more information that'due south helpful when debugging this issue:

  

Tin't connect.

• This is typically a Perforce or local network issue. We accept seen problems with version 2019.2, and we recommend using a unlike version to offset. Sometimes using P4V to relog into your Perforce server can assistance.

• If, during a get-go fourth dimension setup, you become the following fault: Failed to sync awarding And your log contains: Couldn't observe last changelist Brand sure your Depot Path is set to the right Perforce location provided to you lot by your Perforce administrator, and that the path is properly formatted with the two leading slashes, denoting a Perforce depot, and no terminating frontwards slash, as shown in the case below: //depot/path/to/UnrealGameSync/bin Then click Connect once again.

• If this is all set correctly, and your Perforce version is not 2019.two, yous should contact your Perforce admin to confirm you lot accept permissions for your depot path.

**Failed sync or build due to too-long path**.

At that place is a 260 character path limit on most Windows versions that UGS is unable to circumvent. In fact, if UGS detects a path that will be longer than 260 characters, information technology will block syncing a project entirely. In that location is currently no way to disable this check in UGS.

To help with this, you may need to set your workspace in a binder that's closer to the root (for example, D:/prj/workspace/ ). Too, effort to enforce a file naming structure that shortens your file names as much as possible.

This tin can also occur in rare instances if you've decided to sync your project using a .uprojectdirs file instead of a .uproject file. This can be worked effectually by instead setting up the project in UGS with a .uproject file.

1. Select Settings

   

2. Select Browse for both the Name and the Path of the Workspace you're using.

   • Workspace Proper noun:

     

     

   • Workspace Path:

     

3. Instead of selecting a .uprojectdirs file similar in the setup tutorial, select a .uproject file within that stream.

4. Attempt to sync over again.

**UGS won't auto-update.**

• Instance 1: This one is typically due to file contention on the machine. This can be solved by closing UGS, confirming there are no active UGS processes running, and deleting **[AppData]/Local/UnrealGameSync/Latest/ which typically contains the files in contention that foreclose the update.
  

  If the deletion of that folder fails, you should exist shown what file is held in contention and what procedure is belongings on to it. If you're unable to stop that procedure, rebooting should resolve that issue and allow yous to delete that binder.
  

  Afterward, you can apply the UnrealGameSyncLauncher to download the latest update.

  Yous may need to remove UnrealGameSync from your startup applications earlier restarting, deleting the binder, re-adding UGS to the startup applications, and restarting from there depending on how you set UGS.

• Case 2: If a user either doesn't have the proper connection, or the proper permissions to see the Perforce path where the UGS updated binaries are, UGS can hang indefinitely, not assuasive the user to proceed. If this is the example, either update the Depot Path in the connection settings, or speak with your Perforce admin to get the right admission to the files.

Random Build Errors related to "can't discover files".

This is usually a Perforce related error, and non necessarily UGS-related. If your workspace has issues, first try force-syncing the entire engine directory, and if all else fails, create a new workspace.

This can also happen when Sync Filters aren't configured properly, either with something important for building getting filtered out (for case, Win64 folders), or a dependency to a file that's covered by a sync filter has been introduced accidentally. Refer to the UGS Sync Filter Setup documentation for more information.

Cooking from a UGS copy of the Editor fails.

If you lot're getting an error like to,Mistake: Failed to find command BuildCookRun, when attempting to melt or package from a precompiled binary version of the engine distributed through UGS, information technology could be due to needing the source binder for this operation.

Currently, even if yous're non really edifice the source code, you'll need the source directory for cooking and packaging through the precompiled binaries used by UGS. If this is function of your workflow, cheque your sync filters to make sure you're not excluding the source directory, fifty-fifty if y'all're not working directly with it.

Compiler limit: internal heap limit reached.

If you see an fault similar to whatsoever of the following when compiling:

                      Fatal Mistake C1060: Compiler is out of Heap Space          Fatal Error C1076: compiler limit: internal heap limit reached; use /Zm to specify a higher limit          Error C3859: virtual memory range for PCH exceeded; please recompile with a command line option of '-Zm123' or greater        

Yous will demand to utilise a workaround.

• Short-Term Workaround: Restart your machine every bit this clears buried memory and tin temporarily unblock a compile.

• Long-term Resolution: Y'all should contact your IT department with a description of your problem. In some cases, increasing the maximum page file size through the Control Panel may help, but this is something that would need to be done through Information technology at nigh studios.

(Windows) Nothing happens when launching the game or editor, or the editor crashes right abroad with a weird error.

Near of the fourth dimension, this occurs on a auto that hasn't been configured to run Unreal before. If you're on a new machine, have everything synced, and everything else seems to exist in working order, but zip happens when launching, endeavour running the UE4PrereqSetup_x64.exe awarding located at:

<Path to Workspace>/Engine/Extras/Redist/en-united states

This should install the prerequisites needed to run Unreal on a machine that has not done and then previously.

UGS crashes on launch.

UnrealGameSync uses the P4 Command Line tools to query Perforce for updates. Not having Control Line tools installed is the most mutual cause of a crash on launch.

To resolve this problem:

1. Rerun the Perforce Client Installer

2. During installation, ensure command line tools are included

Check for P4 Command Line tools:

1. Open a Command window

2. Enter p4.

3. Printing Enter.

   • If P4 Command Line tools are installed, a series of aid commands are printed.

   • If P4 Command Line tools are not installed, the error bulletin File not found is printed,

Errors generating project files.

When generating project files, if you lot encounter an fault like to:

                      Setting upwards Unreal Engine 4 projection files...          UnrealBuildTool Exception: Organisation.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.          at Organization.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args)          at Organization.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)          at System.String.Format(String format, Object[] args)         …         ERROR: UnrealBuildTool was unable to generate project files. Press any primal to continue . . . Failed to generate project files (exit code ane).        

This is typically acquired past missing Visual Studio Components.

Ensure all Visual Studio Components are installed co-ordinate to the instructions in the Page Not Found documentation.

If y'all encounter an error like to:

error MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.6.2" were not found.

Install the Microsoft SDK and Developer Pack

Error: System.ComponentModel.Win32Exception

When building using UGS, if the post-obit error appears:

                      ubt> Using Visual Studio 2017 14.sixteen.27023 toolchain (C:\Plan Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.16.27023) and Windows 10.0.17763.0 SDK (C:\Program Files (x86)\Windows Kits\10).          ubt> Error: System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified        

This is caused past installing the .Internet Framework and other developer packages, and trying to sync before restarting the figurer.

To correct this trouble, restart the computer, generate project files once again, and rebuild.

This occurs typically with versions of UGS that haven't been updated in some fourth dimension and looks like:

UnrealGameSync has crashed.

System.UnauthorizedAccessException: Access to the path is denied.

To resolve the trouble:

1. Navigate to C:

2. Delete UnrealGameSync.ini

   Removing this file will remove user data, including:

   • Saved build configurations.

   • Editor command line arguments.

   • Favorited open projects.

   • Precompiled editor and incremental build elections.

Couldn't find any Perforce workspace containing .../.uproject. Check your connection settings.

If you're setting up UGS for the first time and add together a project using the local file dialog, but notwithstanding get the in a higher place mistake:

1. Try adding the same file through the Open Project > Workspace > New… dialog.

2. If you're not able to, this is a Perforce permissions issue and you'll demand to piece of work with your Perforce administrator to make sure you take the correct access permissions for the stream and files that your workspace targets.

Connection to server failure.

Attempting to connect to your Perforce server with an unrecognized port number will return the post-obit error:

Perforce client error: Connect to server failed; check $P4PORT

To fix this problem:

1. Open a command/last window

2. Enter p4 set P4PORT=<_local P4 port from admin_>.

3. Press Enter.

4. Close and relaunch UGS.

Likewise, connecting with an unknown user volition generate the error:

Admission for user 'USERNAME' has not been enabled by 'p4 protect'

To fix this, open a control window and:

1. Enter p4 fix P4USER=<perforce.username>.

2. Press Enter.

3. Shut and relaunch UGS.

System.Io.FileNotFoundException: Ionic.Zero.Reduced

Verify that C:\Users[User.proper noun]\AppData\Local\UnrealGameSync\Latest contains Ionic.Zip.Reduced.dll

• If it does exist, yous are likely missing a file from the workspace and should strength sync the Engine\Binaries folder in your workspace

Otherwise, check that your anti-virus is not quarantining it. Follow the steps for your anti-virus to "trust" the file

If you're unsure how to do that, proceed as follows:

1. Cease UGS from the task managing director.

2. Delete the contents of C:\Users[User.name]\AppData\Local\UnrealGameSync\Latest.

3. Restart UGS.

4. Confirm after UGS opens that the file now exists.

UGS is not using the right proxy server.

If after opening the Diagnostics menu (lesser right corner of main window, Options -> Diagnostics at the very bottom of the list), the diagnostics menu shows that you're using your proxy server merely syncing is even so failing, continue equally follows:

1. Open a new project in UGS

2. Look for Using default Perforce server settings.

3. Click on Change.*

4. Disable Utilize default connection settings.

5. Enter your proxy server and user name in the provided fields.

6. Click Ok.

7. Opening the UGS diagnostic should now show the correct server settings.

   

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Source: https://docs.unrealengine.com/5.0/en-US/unreal-game-sync-troubleshooting

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