It bypasses User Account Control (UAC) virtualization, which sometimes redirects write attempts to a virtual store instead of the real current directory.
| Scenario | Likely Cause | |----------|----------------| | Opening drawing from a CD/DVD or read-only USB | Media is physically read-only | | Working on network drive | IT permissions restrict write access | | Saving to C:\Program Files\ or C:\Windows\ | System folders are write-protected by UAC | | Autosave fails | Temp folder inaccessible or full | | After Windows update | Security policies or folder ownership changed | | User account is not administrator | Limited rights to certain directories |
(test only) Some AV tools block .ac$ temp file creation. Make Sure You Can Write To Current Directory Autocad 2013
If the error persists when saving files, you may need to manually grant your user account "Full Control" over the Autodesk folders. Autocad 2013 installation | PPTX - Slideshare
Use SAVEAS and navigate to a user-owned folder like Documents\AutoCAD . It bypasses User Account Control (UAC) virtualization, which
Modern security features like "Controlled Folder Access" can block older software like AutoCAD 2013 from saving files. Open > Virus & threat protection . Select Manage ransomware protection .
Apply these same steps to C:\Users\[YourName]\AppData\Local\Temp because AutoCAD 2013 writes temporary files there too. Autocad 2013 installation | PPTX - Slideshare Use
, as these can block the installer from writing to system directories. Clear Temporary Files : Empty your Windows Temp folder (type