AutoCAD periodically pausing

[ksd]

Hi all.

I'm experiencing an issue with my newly installed AutoCAD 2019.

While using it, it will periodically stop responding (cross hair stops etc, but I can select other apps, write an email for example while waiting for the pause to resolve).

I've installed Process Monitor, and can clearly see whats happening in the background when AutoCAD does this pause.

9:06:36.0693363 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:36.0695501 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:36.0700014 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:36.0701368 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:36.0701852 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:38.3213347 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:38.3215247 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:38.3219078 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:38.3220217 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:38.3220617 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:40.5731917 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:40.5733844 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:40.5737406 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:40.5738565 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:40.5738963 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:42.8244925 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:42.8246796 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:42.8250620 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:42.8251782 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:42.8252229 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:45.0762747 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:45.0764628 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:45.0768445 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:45.0769601 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:45.0769995 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:47.3271723 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:47.3272822 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:47.3275077 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:47.3275776 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:47.3276057 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:49.5786562 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:49.5788608 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:49.5792528 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:49.5793690 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:49.5795157 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:51.8308804 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:51.8310688 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:51.8314618 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:51.8315813 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:51.8316214 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:54.0828209 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:54.0830169 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:54.0834049 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:06:54.0835228 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:54.0835635 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:06:56.3340747 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:06:56.3342644 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:56.4689247 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:06:56.7065764 AM	acad.exe	9840	RegEnumValue	HKCU\Software\FLEXlm License Manager\Borrow	NO MORE ENTRIES	Index: 2, Length: 2,050
9:06:56.7067402 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\Borrow\borrow-d99969ad-87084ACD_2019_0F-1.000	BUFFER OVERFLOW	Length: 144
9:06:56.7067743 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\Borrow\borrow-d99969ad-87084ACD_2019_0F-1.000	BUFFER OVERFLOW	Length: 144

As you can see, it seems to be to do with interacting with the FLEXlm Licence server.

As per the time stamp, the pause seems to last somewhere between 10 and 20 seconds.

I have tried borrowing the licence, but that didn't resolve the issue.

Here's another example of Procmon data from a pause just now:

9:32:37.2083179 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:32:37.2085039 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:32:37.2088989 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:32:37.2090154 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:37.2090552 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:39.4595995 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:32:39.4597935 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:32:39.4601772 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:32:39.4602944 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:39.4603345 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:41.7114863 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:32:41.7116820 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:32:41.7120385 AM	acad.exe	9840	RegOpenKey	HKLM\SYSTEM\CurrentControlSet\Services\NetBT\Linkage	REPARSE	Desired Access: Read
9:32:41.7121574 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:41.7122001 AM	acad.exe	9840	RegQueryValue	HKLM\System\CurrentControlSet\services\NetBT\Linkage\Export	BUFFER OVERFLOW	Length: 144
9:32:43.9626881 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\FLEXLM_ANYHOSTNAME	NAME NOT FOUND	Length: 144
9:32:43.9628759 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:32:44.0801160 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\LM_PROJECT	NAME NOT FOUND	Length: 144
9:32:44.3170084 AM	acad.exe	9840	RegEnumValue	HKCU\Software\FLEXlm License Manager\Borrow	NO MORE ENTRIES	Index: 2, Length: 2,050
9:32:44.3171799 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\Borrow\borrow-d99969ad-87084ACD_2019_0F-1.000	BUFFER OVERFLOW	Length: 144
9:32:44.3172157 AM	acad.exe	9840	RegQueryValue	HKCU\Software\FLEXlm License Manager\Borrow\borrow-d99969ad-87084ACD_2019_0F-1.000	BUFFER OVERFLOW	Length: 144

Any suggestions?

[Alfred.NESWADBA · Accepted solution]

Hi,

>> I have tried borrowing the licence, but that didn't resolve the issue.

When you had borrowed the license, did you also try to disable all your network/disconnect from network, internet, network shares and network printers, then start AutoCAD and try the same once more?

- alfred -

[ksd]

Well, I took the most direct route to trying all of this by simply blocking outgoing comms from acad.exe via the windows firewall, and that seems to have solved the problem.

I'll have to wait and see what kind of chaos this causes with my daily work processes...