ArcGIS 10.8 relies heavily on Microsoft components. The installer usually pulls these automatically, but to avoid "Error 1606" or "Microsoft .NET Framework missing," install these manually first:
Cause: Corrupt .NET Framework or VC++ Redistributables. Fix: install arcgis 10.8
ArcGIS 10.8 uses background processing by default. To avoid random "out of memory" errors:
Geoprocessing > Geoprocessing Options > Uncheck "Enable background processing." ArcGIS 10
If you need to install ArcGIS 10.8 on 50+ lab computers, use the silent installation method. By default, ArcMap is 32-bit, limited to 4GB RAM
For silent licensing, use:
"C:\Program Files (x86)\ArcGIS\Desktop10.8\Bin\SoftwareAuthorization.exe" /LIF "\\server\share\license.prvc" /VER 10.8
By default, ArcMap is 32-bit, limited to 4GB RAM. To allow 3-4GB actual usage:
Before you double-click the setup file, you must verify these three pillars: Hardware, Software, and Licensing.