Hi crmuser12345
I think this issue is related with IE settings:
1. Delete temporary files and cache, cookies:
Close Internet explorer and go to Start > Run > Internet Options
 Click on Tools > Internet Options > General Tab > Delete under browsing history section > Select the options and Delete
 On the general tab clicked on Settings > View Files > and deleted all the temp files
2. Check for Trusted Sites:
 Added trusted sites https://*.microsoft.com , https://*.dynamics.com and https://*.live.com
3. The Zoom Setting of the Internet explorer:
The recommended Zoom setting of the Internet Explorer is 100%.
4. Update and set the Max Connections Per Server (FEATURE_MAXCONNECTIONSPERSERVER and FEATURE_MAXCONNECTIONSPER1_0SERVER) for Internet Explorer by following the below steps:
 You can directly run the Fix It tool from the KB article support.microsoft.com/.../282402 which will fix the FEATURE_MAXCONNECTIONSPERSERVER and FEATURE_MAXCONNECTIONSPER1_0SERVER
OR
 Manually make changes to following registry keys:
NOTE: Take the back up of registry keys before making any changes to them
i. Go to "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPERSERVER"
• Click on Edit menu > Select New > Click on Dword value (32 bit).
• Name the value: iexplore.exe > Value data: 10 > Base: Decimal
ii. Locate the registry "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet
Explorer\MAIN\FeatureControl\FEATURE_MAXCONNECTIONSPER1_0SERVER"
• Click on Edit menu > Select New > Click on Dword value (32 bit).
• Name the value: iexplore.exe > Value data: 10 > Base: Decimal.
5. For memory leak that occurs when you open a Web page that contains a circular reference in an iframe:
 Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl
• On the Edit menu, point to New, and then click Key.
• Type FEATURE_ADDITIONAL_MEMORY_CLEANUP_KB975736, and then press ENTER.
• Right-click FEATURE_ADDITIONAL_MEMORY_CLEANUP_KB975736, point to New, and then click DWORD Value.
• Type Iexplore.exe, and then press ENTER.
• Right-click Iexplore.exe, and then click Modify.
• In the Value data box, type 1, and then click OK.
KB Article: support.microsoft.com/.../975736
6. Increase the Port range:
 Locate the MaxUserPort key in the registry:
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters (select Parameters)
• Check if the MaxUserPort registry exist or not. If yes set the Decimal value to 20000. If no follow the below steps:
 On the Edit menu, point to New, click DWORD Value and then add the following registry value:
• Value Name: MaxUserPort
• Value: 20000
• Base: Decimal
7. Change timeout on connection:
 Locate the TcpTimedWaitDelay key in the registry:
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters (select Parameters)
• Check if the TcpTimedWaitDelay registry exists or not. If yes set the Decimal value to 300. If no follow the below steps:
 On the Edit menu, point to New, click DWORD Value and then add the following registry value:
• Value Name: TcpTimedWaitDelay
• Value: 300
• Base: Decimal
Thank you for using Microsoft Dynamics CRM Communities,
Jimena Gaona | Support Engineer | Microsoft Dynamics CRM
